If you're facing the same sort of issues that I was describing above, it might help you to explore the solution that Paul Williams posted above (https://www.sqlservercentral.com/forums/topic/sql-server-2017-jobs-not-completing#post-3886762).

That worked for...

Thanks so much for your help!  That seemed to do the trick.

It was a bit scary because it broke all of the user logins so we had to rebuild security...

Thanks so much!  That's really helpful, I will try to rebuild those system DBs this weekend.

Also check @@servername - I am assuming you renamed the server to the same as...

Ugh. Ok thanks for that info. What can we do to resolve?  Unfortunately that old AWS image is gone so we can’t go back to that server to update. Is...

Thanks so much for responding!

any errors in sqlagent error log?  no, the error log is empty.  I just kicked off our small job again and watched the error log, no...