When adding Office to a build and capture image in Windows 7 (Workgroup based) there can be a task sequence error that is solved with this patch.
Apply the patch and a reboot before installing Office.

KB2522623: InitializeSecurityContext function might not fall back to NTLM authentication in Windows 7 or in Windows Server 2008 R2 when Kerberos fails and has the STATUS_NO_LOGON_SERVERS status