What does Windows error code 8008 (FRS_ERR_AUTHENTICATION) mean?

FRS_ERR_AUTHENTICATION

The file replication service cannot satisfy the request because authenticated RPC is not available. The event log may have more information.

FRS_ERR_AUTHENTICATION is Win32 error 8008 (0x00001F48) and concerns authenticated RPC for a local legacy FRS request.

What to verify

Verify whether the client and local FRS service can negotiate the required RPC authentication level. Check RPC binding and authentication service, client and service identities, and Kerberos/NTLM and System log events.

Likely causes

• RPC authentication is disabled or misconfigured.
• credentials cannot be obtained.
• security packages or time synchronization fail.
• the client requests an unsupported authentication level.

Troubleshooting steps

1. Collect RPC binding and authentication service.
2. Record client and service identities.
3. Correlate Kerberos/NTLM and System log events with the File Replication Service event log, Service Control Manager, Directory Service and Netlogon events, RPC diagnostics, and replica-set state.

Handling, retry, and recovery

Restore authenticated RPC and machine trust, then repeat the request; never downgrade to unauthenticated management as a workaround.

Related errors

FRS_ERR_INSUFFICIENT_PRIV means authentication succeeded but authorization failed

Example

A remote tool reaches NtFrs but Kerberos fails because the computer account password is out of sync. Repairing the secure channel restores authenticated RPC.

References

• Microsoft: Win32 system error range containing this code
• Microsoft: Migrate SYSVOL from FRS to DFS Replication
• Microsoft: Use BurFlags to reinitialize FRS
• Microsoft: AD DS troubleshooting