FYI I have opened a case on this issue, SR# 4-13531057973.
It may take some time but I will advise
Hi all, after a couple of calls with support, and a MER, we made progress. It is also present in EPO 5.3.0. McAfee support was also able to re-created the problem.
The problem with be passed on to the FRP support team but there is a workaround to get rid of the orphaned invalid server task.
I made a mistake using SQL management studio. When you right click and delete a line, it leaves an empty line. I believe this will mess up the Task IDs. (Need to work on my SQL skills ).
Inside the EPO extension package is an uninstall.sql script. C:\McAfeeFRP5_0\Extension\FRP-extension-22.214.171.124\sql\uninstall.sql
We tried that but it also messed up other server tasks (some other tasks become invalid) recovery from VM snapshot again.
The proper way was to create a query that viewed the server tasks and then a DELETE statement. After backups, when ran a SQL query to list the task and then delete it.
Since every situation could be a little different, I don't want to just paste the SQL query. I suggest you contact support if you have this issue. You can quote SR# 4-13531057973.
If this becomes a common problem McAfee can write up a KB.