In this article, we will discuss the error 8453 (0x2105) and its resolution in the Windows environment. The error 8453 (0x2105) is a common issue that occurs when there is a problem with the Active Directory replication process. It is important for Windows system administrators to understand this error and how to troubleshoot and resolve it effectively.

The Active Directory replication process is crucial for maintaining consistency and synchronization of directory data across multiple domain controllers in a Windows domain. When the replication process encounters an error, such as error 8453 (0x2105), it can lead to inconsistencies and data corruption in the Active Directory.

To resolve error 8453 (0x2105), there are several troubleshooting steps that can be followed:

1. Check the DNS configuration: Ensure that the DNS settings are correctly configured on all domain controllers. Incorrect DNS settings can cause replication issues and result in error 8453 (0x2105). Use the ipconfig /all command in the Command Prompt to verify the DNS settings.

2. Verify network connectivity: Ensure that there is proper network connectivity between the domain controllers. Use the ping command to test the connectivity between the domain controllers. If there are any network issues, resolve them before proceeding further.

3. Check the replication status: Use the repadmin /showrepl command in the Command Prompt to check the replication status of the domain controllers. Look for any errors or warnings related to replication. If error 8453 (0x2105) is reported, proceed with the next steps.

4. Force replication: Use the repadmin /syncall command in the Command Prompt to force replication between the domain controllers. This command initiates an immediate replication process and can help resolve replication errors, including error 8453 (0x2105).

5. Check the event logs: Review the event logs on the domain controllers for any additional information or error messages related to the replication process. Look for any recurring patterns or specific events that can help identify the root cause of the error.

By following these troubleshooting steps, you should be able to resolve error 8453 (0x2105) in the Windows environment. It is important to note that these steps are specific to the Windows operating system and may not be applicable to other environments.

Examples:

Example 1: Checking DNS configuration using Command Prompt

ipconfig /all

Example 2: Verifying network connectivity using ping command

ping <domain controller IP address>

Example 3: Checking replication status using repadmin command

repadmin /showrepl

Example 4: Forcing replication using repadmin command

repadmin /syncall