I have installed Tridion 2011 sp1 and it is working well with administrator account, I have imported some users from Active Directory and when I try to login from any account other than administrator, it throws this error
The search filter is invalid.
Unable to Initialize TDSE object.
System.DirectoryServices.Protocols.LdapConnection.SendRequest(DirectoryRequest,TimeSpan)
System.DirectoryServices.Protocols.LdapConnection.SendRequest(DirectoryRequest)
Tridion.Security.DirectoryService.GetUserClaims(DirectoryServiceUser)
Tridion.ContentManager.Security.AuthorizationManager.LoadAccessToken(String,String)
Tridion.ContentManager.Session..ctor(String,String,UserContext)
Tridion.ContentManager.BLFacade.SystemFacade.InitializeUserContext(UserContext,String,String)
UtilitiesTDS.GetUserContext TDSE.Initialize