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
A common culprit for "access denied" is a misconfigured computer account. Run DCDIAG /TEST:MachineAccount on the affected DC. Dsreplicagetinfo(Pending_Ops Null) Failed Error 0X2105
In ADSIEdit , right-click the naming context (e.g., dc=contoso,dc=com ), go to Properties > Security , and verify the permissions. 4. Audit DNS and Network Settings Sometimes IPv6 using a loopback address as the
If you are seeing the error while running tools like DCDIAG , you've hit a classic Active Directory permissions or configuration roadblock. This error typically means a Domain Controller (DC) is trying to pull replication data but is being told "No" by its partner. Why is This Happening? Reset the Machine Account Password A common culprit
If the secure channel is broken, you can reset the DC's machine account password using Netdom.exe .
Before diving into complex AD edits, ensure you are running your diagnostic tools correctly.
Right-click your Command Prompt or PowerShell and select .