Before doing anything, make sure your backup data is updated (dbs backup and vms snapshots).
This article outlines the procedures that need to take place in for a successfull repair of the solutions: https://support.symantec.com/en_US/article.HOWTO9821.html.
One BIG detail here: The article tells you to use AeXConfig with the /ConfigureAll switch. DO NOT DO THAT. In doing so, you're going to reconfigure ALL SOLUTIONS.
It can take a little while, but the recommended steps are to reconfigure each one of the wanted solutions .config XML files in each solution folder.
How to use AeXConfig:
https://support.symantec.com/en_US/article.HOWTO6681.html.
What does AeXConfig do?
https://support.symantec.com/en_US/article.HOWTO3748.html