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    <title>topic Alfresco exception: connection refused and downgrading of module is not allowed in Alfresco Forum</title>
    <link>https://connect.hyland.com/t5/alfresco-forum/alfresco-exception-connection-refused-and-downgrading-of-module/m-p/130887#M35357</link>
    <description>&lt;P&gt;Hi, I'm new to developing in ACS;&amp;nbsp;&lt;/P&gt;&lt;P&gt;So when I try to start up a local instance of ACS, which the was base on&amp;nbsp;All-In-One (AIO) project for SDK 4.0, and the ACS built based on image pull from docker hub -&amp;nbsp;alfresco/alfresco-content-repository:6.2.0,&amp;nbsp;I got 2 errors after build_start, which confusing me:&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;U&gt;1/ a connection refuse exception; what exacting&amp;nbsp;service.dao.SyncServiceRegistryDAOImpl is doing here ?&lt;/U&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | 2021-11-09 08:58:52,563 INFO [management.subsystems.ChildApplicationContextFactory] [localhost-startStop-1] Starting 'sysAdmin' subsystem, ID: [sysAdmin, default]&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | 2021-11-09 08:58:52,587 INFO [management.subsystems.ChildApplicationContextFactory] [localhost-startStop-1] Startup of 'sysAdmin' subsystem, ID: [sysAdmin, default] complete&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | 2021-11-09 08:58:53,459 ERROR [service.dao.SyncServiceRegistryDAOImpl] [localhost-startStop-1] Unable to determine hostname due to exception: Connection refused (Connection refused) trying InetAddress...&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | java.net.ConnectException: Connection refused (Connection refused)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.Socket.connect(Socket.java:591)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:177)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient.openServer(HttpClient.java:474" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient.openServer(HttpClient.java:474&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient.openServer(HttpClient.java:569" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient.openServer(HttpClient.java:569&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient&lt;/A&gt;.&amp;lt;init&amp;gt;(HttpClient.java:242)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient.New(HttpClient.java:341" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient.New(HttpClient.java:341&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient.New(HttpClient.java:362" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient.New(HttpClient.java:362&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1242" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1242&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1181" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1181&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1065" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1065&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1063" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1063&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivilegedWithCombiner(AccessController.java:793)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1062" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1062&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1009" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1009&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1581" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1581&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1501" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1501&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1499" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1499&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivilegedWithCombiner(AccessController.java:793)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.alfresco.repo.sync.service.dao.SyncServiceRegistryDAOImpl.getHostname(SyncServiceRegistryDAOImpl.java:113)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.alfresco.repo.sync.service.dao.SyncServiceRegistryDAOImpl.setSyncServiceUris(SyncServiceRegistryDAOImpl.java:70)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.alfresco.repo.sync.service.dao.SyncServiceRegistryDAOImpl.setSyncServiceUris(SyncServiceRegistryDAOImpl.java:52)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.lang.reflect.Method.invoke(Method.java:566)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.BeanWrapperImpl$BeanPropertyHandler.lambda$setValue$3(BeanWrapperImpl.java:324)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.BeanWrapperImpl$BeanPropertyHandler.setValue(BeanWrapperImpl.java:323)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractNestablePropertyAccessor.processLocalProperty(AbstractNestablePropertyAccessor.java:458)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractNestablePropertyAccessor.setPropertyValue(AbstractNestablePropertyAccessor.java:278)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractNestablePropertyAccessor.setPropertyValue(AbstractNestablePropertyAccessor.java:266)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:97)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:77)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1714)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1433)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:845)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:400)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:291)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.alfresco.web.app.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:70)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4699)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5165)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.access$000(ContainerBase.java:129)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:150)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:140)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:717)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1859)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.lang.Thread.run(Thread.java:834)&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT color="#000000"&gt;2/ Failed to start module to "Downgrading of module is not allowed" ; but I checked all the pom, dockerfile, and grep through the container, I counld not find where the "newer" 1.4.0 aos module came from&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | 2021-11-09 08:59:00,625 ERROR [web.context.ContextLoader] [localhost-startStop-1] Context initialization failed&lt;BR /&gt;alfresco-acs_1 | org.alfresco.error.AlfrescoRuntimeException: 10090020 Failed to start modules&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper$1.doWork(ModuleComponentHelper.java:326)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:602)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper.startModules(ModuleComponentHelper.java:213)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleServiceImpl.startModules(ModuleServiceImpl.java:149)&lt;BR /&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)&lt;BR /&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)&lt;BR /&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.lang.reflect.Method.invoke(Method.java:566)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:295)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)&lt;BR /&gt;alfresco-acs_1 | at com.sun.proxy.$Proxy138.startModules(Unknown Source)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleStarter$1.execute(ModuleStarter.java:73)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:338)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleStarter$2.doWork(ModuleStarter.java:83)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:602)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleStarter.onBootstrap(ModuleStarter.java:78)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.extensions.surf.util.AbstractLifecycleBean.onApplicationEvent(AbstractLifecycleBean.java:56)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.management.SafeApplicationEventMulticaster.multicastEventInternal(SafeApplicationEventMulticaster.java:221)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.management.SafeApplicationEventMulticaster.multicastEvent(SafeApplicationEventMulticaster.java:186)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.management.SafeApplicationEventMulticaster.multicastEvent(SafeApplicationEventMulticaster.java:206)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:402)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:359)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:896)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:400)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:291)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.web.app.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:70)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4699)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5165)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.access$000(ContainerBase.java:129)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:150)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:140)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:717)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1859)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.lang.Thread.run(Thread.java:834)&lt;BR /&gt;alfresco-acs_1 | Caused by: org.alfresco.error.AlfrescoRuntimeException: 10090019&lt;BR /&gt;alfresco-acs_1 | Downgrading of modules is not supported.&lt;BR /&gt;alfresco-acs_1 | Module 'alfresco-aos-module' version 1.4.0 is currently installed and must be uninstalled before version 1.3.0 can be installed.&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.error.AlfrescoRuntimeException.create(AlfrescoRuntimeException.java:52)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper.startModule(ModuleComponentHelper.java:633)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper.access$5(ModuleComponentHelper.java:530)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper$1$1.execute(ModuleComponentHelper.java:263)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:338)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper$1.doWork(ModuleComponentHelper.java:284)&lt;BR /&gt;alfresco-acs_1 | ... 50 more&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT color="#000000"&gt;Could anyone help me on these 2 error ?&lt;/FONT&gt;&lt;/P&gt;</description>
    <pubDate>Tue, 09 Nov 2021 10:47:44 GMT</pubDate>
    <dc:creator>JackyWong-HKT</dc:creator>
    <dc:date>2021-11-09T10:47:44Z</dc:date>
    <item>
      <title>Alfresco exception: connection refused and downgrading of module is not allowed</title>
      <link>https://connect.hyland.com/t5/alfresco-forum/alfresco-exception-connection-refused-and-downgrading-of-module/m-p/130887#M35357</link>
      <description>&lt;P&gt;Hi, I'm new to developing in ACS;&amp;nbsp;&lt;/P&gt;&lt;P&gt;So when I try to start up a local instance of ACS, which the was base on&amp;nbsp;All-In-One (AIO) project for SDK 4.0, and the ACS built based on image pull from docker hub -&amp;nbsp;alfresco/alfresco-content-repository:6.2.0,&amp;nbsp;I got 2 errors after build_start, which confusing me:&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;U&gt;1/ a connection refuse exception; what exacting&amp;nbsp;service.dao.SyncServiceRegistryDAOImpl is doing here ?&lt;/U&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | 2021-11-09 08:58:52,563 INFO [management.subsystems.ChildApplicationContextFactory] [localhost-startStop-1] Starting 'sysAdmin' subsystem, ID: [sysAdmin, default]&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | 2021-11-09 08:58:52,587 INFO [management.subsystems.ChildApplicationContextFactory] [localhost-startStop-1] Startup of 'sysAdmin' subsystem, ID: [sysAdmin, default] complete&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | 2021-11-09 08:58:53,459 ERROR [service.dao.SyncServiceRegistryDAOImpl] [localhost-startStop-1] Unable to determine hostname due to exception: Connection refused (Connection refused) trying InetAddress...&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | java.net.ConnectException: Connection refused (Connection refused)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.net.Socket.connect(Socket.java:591)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:177)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient.openServer(HttpClient.java:474" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient.openServer(HttpClient.java:474&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient.openServer(HttpClient.java:569" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient.openServer(HttpClient.java:569&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient&lt;/A&gt;.&amp;lt;init&amp;gt;(HttpClient.java:242)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient.New(HttpClient.java:341" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient.New(HttpClient.java:341&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.http.HttpClient.New(HttpClient.java:362" target="_blank" rel="nofollow noopener noreferrer"&gt;www.http.HttpClient.New(HttpClient.java:362&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1242" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1242&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1181" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1181&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1065" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1065&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1063" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1063&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivilegedWithCombiner(AccessController.java:793)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1062" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1062&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1009" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1009&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1581" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1581&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1501" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1501&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1499" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection$9.run(HttpURLConnection.java:1499&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivilegedWithCombiner(AccessController.java:793)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/sun.net.&lt;A href="http://www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498" target="_blank" rel="nofollow noopener noreferrer"&gt;www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498&lt;/A&gt;)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.alfresco.repo.sync.service.dao.SyncServiceRegistryDAOImpl.getHostname(SyncServiceRegistryDAOImpl.java:113)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.alfresco.repo.sync.service.dao.SyncServiceRegistryDAOImpl.setSyncServiceUris(SyncServiceRegistryDAOImpl.java:70)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.alfresco.repo.sync.service.dao.SyncServiceRegistryDAOImpl.setSyncServiceUris(SyncServiceRegistryDAOImpl.java:52)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.lang.reflect.Method.invoke(Method.java:566)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.BeanWrapperImpl$BeanPropertyHandler.lambda$setValue$3(BeanWrapperImpl.java:324)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.BeanWrapperImpl$BeanPropertyHandler.setValue(BeanWrapperImpl.java:323)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractNestablePropertyAccessor.processLocalProperty(AbstractNestablePropertyAccessor.java:458)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractNestablePropertyAccessor.setPropertyValue(AbstractNestablePropertyAccessor.java:278)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractNestablePropertyAccessor.setPropertyValue(AbstractNestablePropertyAccessor.java:266)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:97)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:77)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1714)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1433)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:845)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:400)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:291)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.alfresco.web.app.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:70)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4699)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5165)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.access$000(ContainerBase.java:129)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:150)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:140)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:717)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1859)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | at java.base/java.lang.Thread.run(Thread.java:834)&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT color="#000000"&gt;2/ Failed to start module to "Downgrading of module is not allowed" ; but I checked all the pom, dockerfile, and grep through the container, I counld not find where the "newer" 1.4.0 aos module came from&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT color="#0000FF"&gt;alfresco-acs_1 | 2021-11-09 08:59:00,625 ERROR [web.context.ContextLoader] [localhost-startStop-1] Context initialization failed&lt;BR /&gt;alfresco-acs_1 | org.alfresco.error.AlfrescoRuntimeException: 10090020 Failed to start modules&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper$1.doWork(ModuleComponentHelper.java:326)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:602)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper.startModules(ModuleComponentHelper.java:213)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleServiceImpl.startModules(ModuleServiceImpl.java:149)&lt;BR /&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)&lt;BR /&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)&lt;BR /&gt;alfresco-acs_1 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.lang.reflect.Method.invoke(Method.java:566)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:295)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)&lt;BR /&gt;alfresco-acs_1 | at com.sun.proxy.$Proxy138.startModules(Unknown Source)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleStarter$1.execute(ModuleStarter.java:73)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:338)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleStarter$2.doWork(ModuleStarter.java:83)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:602)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleStarter.onBootstrap(ModuleStarter.java:78)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.extensions.surf.util.AbstractLifecycleBean.onApplicationEvent(AbstractLifecycleBean.java:56)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.management.SafeApplicationEventMulticaster.multicastEventInternal(SafeApplicationEventMulticaster.java:221)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.management.SafeApplicationEventMulticaster.multicastEvent(SafeApplicationEventMulticaster.java:186)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.management.SafeApplicationEventMulticaster.multicastEvent(SafeApplicationEventMulticaster.java:206)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:402)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:359)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:896)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:400)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:291)&lt;BR /&gt;alfresco-acs_1 | at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.web.app.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:70)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4699)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5165)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.access$000(ContainerBase.java:129)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:150)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:140)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.security.AccessController.doPrivileged(Native Method)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:717)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125)&lt;BR /&gt;alfresco-acs_1 | at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1859)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)&lt;BR /&gt;alfresco-acs_1 | at java.base/java.lang.Thread.run(Thread.java:834)&lt;BR /&gt;alfresco-acs_1 | Caused by: org.alfresco.error.AlfrescoRuntimeException: 10090019&lt;BR /&gt;alfresco-acs_1 | Downgrading of modules is not supported.&lt;BR /&gt;alfresco-acs_1 | Module 'alfresco-aos-module' version 1.4.0 is currently installed and must be uninstalled before version 1.3.0 can be installed.&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.error.AlfrescoRuntimeException.create(AlfrescoRuntimeException.java:52)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper.startModule(ModuleComponentHelper.java:633)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper.access$5(ModuleComponentHelper.java:530)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper$1$1.execute(ModuleComponentHelper.java:263)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:338)&lt;BR /&gt;alfresco-acs_1 | at org.alfresco.repo.module.ModuleComponentHelper$1.doWork(ModuleComponentHelper.java:284)&lt;BR /&gt;alfresco-acs_1 | ... 50 more&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT color="#000000"&gt;Could anyone help me on these 2 error ?&lt;/FONT&gt;&lt;/P&gt;</description>
      <pubDate>Tue, 09 Nov 2021 10:47:44 GMT</pubDate>
      <guid>https://connect.hyland.com/t5/alfresco-forum/alfresco-exception-connection-refused-and-downgrading-of-module/m-p/130887#M35357</guid>
      <dc:creator>JackyWong-HKT</dc:creator>
      <dc:date>2021-11-09T10:47:44Z</dc:date>
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