John B. Smith wrote:

I just noticed, finally, that my Avast is 'no longer supported for XP
or Vista'. I'm looking for a free antivirus and it seems to be a tough
hunt. I finally downloaded something from Scanguard, but it's not
really free, just runs a scan for you, there's no real-time
protection. I wasn't able to make out what activating their real-time
protection was going to cost me. Anyone have any suggestions for me?

Google still works:

https://www.google.com/search?q=anti...20windows%20xp

which found, for example:

https://windowsreport.com/antivirus-...ervice-pack-3/

That's now. In another year, or less, some of those may also drop
Windows XP support.