Windows Server: AD, DNS & Group Policy
Active Directory replication, trusts, DNS, SYSVOL and Group Policy processing.
55 articles
0x6BA
Error 0x6BA during domain join: RPC and the endpoint mapper are blocked
Error 0x6BA means the joining client cannot reach RPC on the DC. Open TCP 135, the dynamic range and 445,…
0x52E
Error 0x52E joining a domain: credentials rejected or missing OU rights
Error 0x52E means the join account failed to authenticate or lacks rights on the target OU. Delegate Create Computer Objects…
8557
Error 8557 machine account quota exceeded: no more computers may join
Error 8557 blocks the join once ms-DS-MachineAccountQuota is used up. Pre-stage the object or delegate the OU, and license every…
8453
Error 8453 replication access denied: repairing AD replication permissions
Error 8453 is replication access denied. Check the DC account's UserAccountControl flags and the five rights on the naming context…
1789
Error 1789 trust relationship failed: rebuilding a broken secure channel
Error 1789 means the computer password no longer matches AD. Reset the secure channel with Test-ComputerSecureChannel instead of blindly rejoining.
8524
Error 8524 DNS lookup failure: replication cannot resolve the source DC
Error 8524 is a DNS lookup failure during replication. Check for a stale NTDS Settings object first, then the GUID…
1788
Error 1788 trusted domain failure: forest and external trusts that stop working
Error 1788 breaks authentication across a trust. Verify the trust, reset the secret if that fails, then check DNS between…