How do I stop Avast from shutting down my Microsoft installed Windows Defender?
Defender is designed to shut itself mostly off when a 3rd Party Antivirus is installed. Only function that is allowed to work I believe with Avast installed is Periodic Scanning
when you install a antivirus, microsoft defender is autodisabled
It’s prudent to in mind that having 2 (two) firewalls active together is never a wise decision; simply put “rules” can/will conflict.