Issue
The SEPM server needs to be reinstalled and reconnected to its existing SQL Database.
Solution
Note: Only the screen shots for the most important steps are shown.
1. Save the recovery file from the Server Private Key Backup folder located in the SEPM installation folder (default: C:\Program Files (x86)\Symantec\Symantec Endpoint Protection Manager).
2. Uninstall the current SEPM installation.
3. Reboot the server to finalize the uninstallation (required).
4. Run the SEPM installation from the media folder.
5. Make sure to use the same settings as the previous installation, select the option to “Use a recovery file to restore communication with previously deployed clients” and browse to the good certificate file saved previously in step 1:
6. Select the appropriate parameter:
7. Select “Install an additional management server to an existing site”:
8. Go through the server settings.
9. Confirm the path for the SQL Server Client, enter the Database password and click Next. The information that the management server name already exists will be pop up, confirm by clicking Yes to complete the process:
10. Once the initialization of the Database complete, the SEPM server is up and running again.
Note: It may take a few minutes before the SEP clients appear online again. That will depend on the communication settings in place.