346 solutions found, page 5 of 18
0X00002142 You can't nest global security groups in a mixed domain. The fix is to change the domain functional level or use universal groups. Here's how....
0X00002587 This error means the DNS zone is locked, preventing updates. I'll show you how to unlock it via PowerShell or the DNS console....
0X000006C0 This RPC protocol error usually hits during remote WMI connections or DFS replication. The fix is almost always a corrupted RPC endpoint mapper or a f...
0X000020B9 Active Directory sync or monitoring tool threw this because its LDAP notification filter is too nested or has too many objects. Usually a bad app conf...
0XC003005F This error means an RPC pipe closed unexpectedly. It's almost always a firewall or authentication timeout issue. I'll walk you through the three most ...
0XC0000405 Active Directory found two objects with the same GUID or SID. Usually happens after a failed domain controller restore. Fix: tombstone reanimation cle...
0X00001AA5 This error means the transactional resource manager already cleaned up. No recovery needed. Happens after a crash or during a replication failover....
0X0000054A This error means you tried a domain operation that only the Primary Domain Controller (PDC) can do. Here's how to fix it fast....
0X000020DC This error means Active Directory can't find a cross-reference for a naming context. The fix is to add the missing reference manually via NTDSUTIL or ...
0X00002118 Active Directory can't map a name to the format you asked for. Here's how to fix it quickly — check SPNs, DNS, and trust settings....
0X00000A3A This error means another computer on your network already claimed that workstation name. I'll show you how to rename or release it fast....
0X0000218D This error means AD couldn't derive a service principal name because a required server object reference is missing. Common fix: restore the deleted se...
0X000019DF This error means your transaction log can't truncate because an active backup or log shipping job hasn't marked the log as backed up. Happens mostly o...
0X80010122 This error means a service principal name (SPN) isn't formatted as Microsoft standard. The fix is to delete and re-register the SPN using setspn....
0X00002560 That error means the DNS server hit a bad record while loading zones. You'll need to find and fix or skip that record....
0X00002097 This error pops up when you try to add an object to a directory partition, but that object isn't a Domain System Agent (DSA). Here's how to fix it fas...
0X000021C8 This error pops up when two users or computers in your AD forest share the same UPN. Here's how to find and nuke the duplicate quick....
0X00002166 That error means you're trying to add a security-sensitive attribute to the Global Catalog, and AD won't let you. You'll need to edit the schema or wo...
0X000013C4 This error means a cluster network is misconfigured for internal communication. Most often a network role is set to Client and Internal when it must b...
0X0000201C This error means a policy object exists only in the directory service, not in Sysvol. Here's how to fix it fast....