Cannot sign in with Office Communicator 2005

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  Hi All,

  I have setup a LCS Server Standard Edition 2005 in a child domain "abcd_nt_domain.forest-domain.local".

  The LCS users are hosted also in this child domain "abcd_nt_domain.forest-domain.local".

  In this scenario, I were able to sign-in successfully withOC 2005 client.

   

  Since I had moved the LCS Server Standard Edition 2005 into another child domain "abcd-domain.forest-domain.local", I had never been able to sign-in with OC 2005 and I always get the following message:

   

  "Cannot sign in to Communications Service. You may have entered your sign-in name, username, or password incorrectly, or the autentification service may be incompatible with this version of the program"
  

  - LCS User is in child domain "abcd_nt_domain.forest-domain.local"

  - LCS Server is in child domain "abcd-domain.forest-domain.local"

   

  LCS User lcs-user1 is in child domain "abcd_nt_domain.forest-domain.local".

  LCS User lcs-user1 has following SIP address: lcs-user1@company.local

   

  When sign-in, I use the follwoing info in OC 2005 "Sign-In Account" dialog box:

  Account: lcs-user1@company.local

  Username: abcd_nt_domain\lcs-user1

   

  Is this due to the multiple domain topology ?

  I mean the fact that user lcs-user1 is in a different child domain that the LCS Server.

  Is the "_" underscore character could be the root cause ?

  Or is there any other known root cause ?

   

  Thanks very much for any help.

   

  Friday, January 4, 2008 5:51 PM