I downloaded and installed the Avast Windows Server antivirus program and installed it.
The server that I installed the software on had a production database syncronization process, which keeps a legacy PSQL database in sync with MS SQL Server. The synchronization process uses a combination of executable programs, the windows task scheduler and the SQL Server agent.
As soon as the antivirus software came up, it deleted every executable that the task scheduler ran, and it deleted the jobs in the task scheduler that started the executables.
So the default AVAST assumption is that programs getting executed and the task scheduler executing tasks are viruses????
I should have just installed a virus.
When we realized what was happening we stopped the realtime virus monitoring.
We were able to recover the executables from their "vault" but the jobs and their schedules are deleted without notification and without being saved. So there was nothing to recover.
A call to Avast support was HIDEOUS.
I had an agent who simply re-read the AVAST support policies after each question I asked.
The bottom line was, go to the website. Type in your question, and they will get back to you in 24 hours.
This is going to take hours to get sorted out.
If you are looking for a single server antivirus solution, my recommendation is ANYBODY ELSE BUT AVAST.