Sharing case solution:
Finding Details:
Issue
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- Restore deleted DNS records through an AD restore
- DNS restore is successful. However, unable to open the restored file and getting the error.
Solution:
- Case was escalated to Development who advised to perform a 1-touch restore without minisetup -- however issue still remained
- Development team have sent the bellow steps to perform an Authoritative AD restore
1. Do a 1-Touch Restore keeping SYSVOL Restore option to “Authoritative”, and in Advanced Option, un-check the option “Reboot after restore complete”. Proceed with the restore.
2. When the Restore is complete, open registry using the command prompt.
3. Next, we need to load the backed up machine’s registry hive and create a key. Click on HKEY_LOCAL_MACHINE and go to File -> Load Hive. The registry to be loaded will be found in C:\Windows\System32\config, titled “SYSTEM”. Give it any name, say “Backup”.
4. In the loaded hive “Backup”, navigate to CurrentControlSet\Services\DFSR (The current control set is recorded in “Current” under HKEY_LOCAL_MACHINE\SYSTEM\Select – e.g. if it is 1, it points to ControlSet001). Create a new key “Restore”, and modify the “default” value data to “authoritative”.
5. Click on the loaded hive “Backup” and go to File -> Unload Hive. The “Backup” hive will now be unloaded from the WinPE registry.
6. Reboot the machine by executing command “shutdown /r” on command line, and wait for the post restore steps to finish (The system will boot twice)
- Customer performed the above and informed the restore completed and the deleted DNS zone was restored and is accessible
- Customer followed the steps here https://documentation.commvault.com/11.25/essential/57216_replicating_active_directory_data_to_all_domain_controllers_in_domain.html to replicate the AD to all other domains and informed replication is also working