I tried adding an exception definition (for MS Store), I tried the virus definition update, I've tried running as administrator, I've allowed "all connections" and used "auto-decide" for the other connection requests (I've also tried "Ask"), and I've tried shutting down all other applications besides Avast. No luck. It will run beautifully if I turn off "all shields" on Avast without running as administrator and even with other programs running. I have the latest version of Avast (paid subscription). My PC is 100% up-to-date including drivers. I don't want to simply play without an antivirus running. Any other suggestions?