Oh, crap!
I was aware there was some false positives with Avast antivirus.
Which antivirus is it? The one that comes with Windows?
You may add an "exception" in the antivirus to make it not scan the program but I'd recommend you check the program before with an online scanner like VirusTotal (it scans one file with many antivirus software) in order to see if there is only one or two detections which should be false positives or if there are plenty, which could indicate a real infection.
Sorry you had so many issues... 😕