Cannot login to Alfresco Community using SSO [solved]

[halane]

Hello,
I'm a newbie using Alfresco so I apologize if you find my problem very basic. I want to allow windows domain users to login to Alfresco Share automatically. Currently I can login to alfresco and share using my windows credentials, but I want to login automatically and I can't because alfresco and share always ask me the user and password.
I've been reading a lot of documentation but I cannot solve my problem because I don't know what I'm doing wrong, so any help would be appreciated.
My installation:
alfresco community 4.0.d x32 in Windows 7 pro (Alfresco server)
active directory (windows 2003 server R2)
once everything works fine, the alfresco server will be installed on the 2003 r2 server.

My config on alfresco-global.properties:

 ### AUTH CHAIN###  
 authentication.chain=passthru1:passthru,alfrescoNtlm1:alfrescoNtlm,ldap-ad1:ldap-ad
###NTML
ntlm.authentication.sso.enabled=true
alfresco.authentication.authenticateCIFS=false
###Passthru ###
passthru.authentication.authenticateCIFS=true
passthru.authentication.useLocalServer=false
passthru.authentication.domain=mydomain
passthru.authentication.servers=mydomainl\\x.x.x.x

### LDAP ##
ldap.authentication.active=false
ldap.authentication.userNameFormat=%s@mydomain
ldap.authentication.java.naming.provider.url=ldap://x.x.x.x:389
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I also have done this: http://docs.alfresco.com/4.0/index.jsp?topic=%2Fcom.alfresco.enterprise.doc%2Fconcepts%2Fauth-passth...

Thanks in advance,
Halane

[halane]

It was a windows 7 isssue, I hadalready changed the security policies, but I haven't chose the proper one.  So in order for it to work I've done the following:

 

Launch Windows 7 Group Policy Editor (gpedit.msc)
    Go to Computer Configuration -> Security Settings -> Local Policies -> Security Options
    Look out for “Network Security: LAN Manager Authentication Level”
    Change  it to “Send LM & NTLM”