How to fix “Replication access was denied. [ERROR_DS_DRA_ACCESS_DENIED (0x2105)]” – Error Code 8453

Overview

In this article, we’ll delve into the causes and solutions for the error: “Replication access was denied. [ERROR_DS_DRA_ACCESS_DENIED (0x2105)]”. This error, identified by the error code 8453, can significantly impact your system’s performance.

Identifying the Problem

Definition:

Error Code 8453 occurs when a replication operation is denied due to insufficient permissions. This error can prevent data from being synchronized between servers, compromising the integrity of your IT infrastructure.

Common Symptoms:

• Failure to replicate changes in Active Directory
• Event ID 1135 logged in the Directory Services event log
• Reported errors in the File Replication Service (FRS) or Distributed File System (DFS) logs

Common Fixes

1. Check Replication Permissions:

• Ensure that the 帳戶 performing the replication has sufficient permissions, including “Replicate Directory Changes” and “Replicate Directory Changes All”
• Verify that the source and destination servers have a trust relationship allowing replication

2. Reconfigure FRS or DFS:

• For FRS, verify that the SYSVOL directory share has read/write permissions for the Replicator group
• For DFS, check that the shared folders and permissions are configured correctly for replication

3. Disable/Enable Replication:

• Temporarily disable and re-enable replication to restart the service and establish new connections
• Check the event logs for any additional error messages or indications of the issue

Advanced Troubleshooting

1. Reset Replication Metadata:

• Use the command “repadmin /resetmetadata” to clear the replication metadata and force a resynchronization
• Note that this will temporarily disrupt replication and may require re-initializing the replica

2. Troubleshoot Extended Protection:

• Disable extended protection for Active Directory
• Check the registry key “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NTDS\Parameters” for the value “EnableSecuritySignature” (0 for disabled)

3. Use Network Monitor:

• Capture network traffic using Network Monitor
• Analyze the captured packets to identify any errors or communication failures during replication

Conclusion

We trust that this comprehensive guide has provided you with the necessary knowledge and techniques to resolve Error Code 8453. By following these solutions, you can ensure the smooth functioning of your IT infrastructure and maintain data integrity.

To prevent future occurrences of this error, consider these additional tips:

• Regularly review and update replication permissions
• Implement a robust backup and disaster recovery plan
• Monitor replication events closely to detect any potential issues
• Seek professional assistance if the error persists