Symptoms
NTLM Authentication fails with 'RPC Fault received' error and return code: 0xc0000001 (STATUS_UNSUCCESSFUL)
Impact
NTLM authentication for Active Directory users which are subscribed to more than hundred groups will fail.
Conditions
1. NTLM front-end authentication is enabled.
2. Active Directory users are subscribed to more than one hundred groups.
Fix Information
A fix has been provided to the sequence number handling which is used to calculate the RPC checksum as part of ID 949477.
