error with ldap

[pachacute]

hi, I can connect AD with alfresco, I can login with user and pass, but the first click in everywhere, the system show this error

net.sf.acegisecurity.AuthenticationServiceException: Failed to open passthru auth session

net.sf.acegisecurity.AuthenticationServiceException: Failed to open passthru auth session 
at org.alfresco.repo.security.authentication.ntlm.NTLMAuthenticationComponentImpl.authenticatePassthru(NTLMAuthenticationComponentImpl.java:793) 
at org.alfresco.repo.security.authentication.ntlm.NTLMAuthenticationComponentImpl.authenticate(NTLMAuthenticationComponentImpl.java:550) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:597) 
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:281) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:187) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:154) 
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:176) 
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:210) 
at $Proxy17.authenticate(Unknown Source) 
at org.alfresco.web.app.servlet.NTLMAuthenticationFilter.processType1(NTLMAuthenticationFilter.java:523) 
at org.alfresco.web.app.servlet.NTLMAuthenticationFilter.doFilter(NTLMAuthenticationFilter.java:395) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) 
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870) 
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) 
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) 
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) 
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685) 
at java.lang.Thread.run(Thread.java:619) 
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please if anyone can help i appraise very much

PS: I from South America and my English is not very well

[pachacute]

recently I found this detail in my log file

17:08:10,596 DEBUG [org.alfresco.smb.protocol.auth] Passthru server online, [ariztia.com\IBM-VGARCIA1.ariztia.cl:10.10.11.148:Online:0,0]
17:08:16,019 WARN  [org.springframework.remoting.rmi.RmiRegistryFactoryBean] Could not detect RMI registry - creating new one
17:08:21,865 INFO  [org.alfresco.repo.security.authentication.ldap.LDAPInitialDirContextFactoryImpl] LDAP server does not fall back to anonymous bind for a string uid and password at ldap://10.10.2.20:389
17:08:21,865 INFO  [org.alfresco.repo.security.authentication.ldap.LDAPInitialDirContextFactoryImpl] LDAP server does not fall back to anonymous bind for a simple dn and password at ldap://10.10.2.20:389
17:08:21,880 INFO  [org.alfresco.repo.security.authentication.ldap.LDAPInitialDirContextFactoryImpl] LDAP server does not support the required authentication mechanism
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anyone can help

please

greetings cristian