Sometimes IPv6 using a loopback address as the primary DNS can interfere. Try temporarily disabling the IPv6 stack to see if connectivity restores. 5. Reset the Machine Account Password
If the DC has been offline longer than the or if the metadata is severely corrupted, the most reliable path may be to perform a metadata cleanup using ntdsutil , demote the server (forcibly if necessary), and re-promote it. Dsreplicagetinfo(Pending_Ops Null) Failed Error 0X2105
Use ADSIEdit or a similar tool to check the userAccountControl attribute. A healthy DC typically has a value of . If it is a lower value like 0x288, the system isn't recognizing the server as a trusted DC. 3. Verify Replication Permissions Sometimes IPv6 using a loopback address as the
Right-click your Command Prompt or PowerShell and select . Reset the Machine Account Password If the DC
Troubleshooting the "DsReplicaGetInfo(Pending_Ops Null) Failed Error 0X2105" in Active Directory