I've used the free Antivir antivirus program for decades on my machines. It was effective for a long time, and I could put up with it's once-a-day ad for subscription.
But it's been getting a LOT pushier lately. I've already been through hell with McAfee back in the '80s (that's a different story), and I remember hating Norton. So...can anyone suggest a decent antivirus program for Windows? Preferably one that's open-source, free, and maybe part of the Fediverse if that's not insane?