Let us examine the error 14421 error in SQL server in detail. At Bobcares our MSSQL support services can give you a detailed note on the reasons causing the error and the Troubleshooting steps to resolve the error easily.

Causes for 14421 error in SQL server


Error: The log shipping secondary database %s.%s has restore threshold of %d minutes and is out of sync.
No restore was performed for %d minutes. Restored latency is %d minutes. Examine the agent log and logshipping monitor data.


The following are some of the possible causes of the 14421 error in log shipping:

1. SQL Server Standby Agent Account Backup Share Permission.
2. Backup Share has a network problem.
3. Disk space problem with the Local Copy Folder.
4. Standby Service Account Change.
5. The copy/restore job owner has changed.
6. Changed/disabled job schedule copy/restore.
7. Copy/Restore jobs are unable to notify the Monitor server of their status. (Only applicable when Monitor is active ).
8. Manual Log Backups; No LSN Chain; Corrupt Log Backups.
9. Unintentional restoring of a log backup WITH RECOVERY.
10. TUF file corruption will cause the restore job to fail.
11. SQL Server Agent is unavailable.
12. Issues with disk space on the Standby database location.
13. The backup database is corrupt.
14. Constant standby usage for the offload reporting tasks.
15. When restoring on Standby a file was added on Primary in a different path.

The cooldown time is not updated when Error 14421 occurs, especially if the restore job completes successfully with the message “Unable to find a backup file that can be used by the secondary database.”  A copy job can act as the trigger for this error.

When the restore function succeeds, Error 14421 is thrown: “Unable to find a log backup file that could potentially be applied to the secondary database.” In this case, the recovery time will fail to update. In this case, the source of each of our errors can become a problem with cloning.

Possible Solutions to Troubleshoot SQL Server Error 14421

There will be numerous solutions to troubleshoot this error. To troubleshoot SQL Server log shipping error 14421, we can try the following solutions (in order):

• Location Analysis: For the restoration procedure, we must determine whether the location you specified exists or not.

  Now try to restore the data again, and if the error persists, proceed to the next step; otherwise, stop the procedure here.
• Examine the Permissions: Examine the settings on the server where the database is being restored. Check to see if the permissions for restoring the data are active. If active, proceed or else, disable the permission and restart the server.
• Check the Date and Time of the Server: Determine whether the date and time of the primary and secondary servers are the same. If not, change these attributes; otherwise, proceed to the next procedure.
• Determine Authentication Status: Examine the current authentication status between the monitor and primary server to troubleshoot SQL Server error 14421.

  In this state, we must determine the proper configurations of the permissions. If not, reconfigure them; otherwise, proceed to the next step.
• Analysis of Job History: We must review the previous operation on the server. Previous database activities can influence the behavior of other features.

  As a result, we must examine the entire job history and, if there is any issue affecting the behavior, then resolve that issue and restart the machine.

[Need assistance with similar queries? We are here to help]

Conclusion

To conclude the 14421 error in SQL server is easy to solve if we analyze the reasons for triggering it in detail. We have gone through the multiple reasons for trigging the error and the Troubleshooting steps for it with the support of MSSQL support services.