@Txai said in Possible virus threat on \Qt\6.5.0\mingw_64\bin \Qt63DRender.debug: Suggestion? Report to your antivirus tool and/or update your signatures. Don't know what Qt can do against a false positive.

The binaries may scan fine but the behavior of the program could be the trigger. If the program does things that are suspicious it will get more attention (especially a new program). Just to make sure I would build Qt from source or only use binaries from a trusted source with a checksum hash that you can verify. This is a big concern I have when moving between Windows computers. I have not had problems but I always keep in the back of my mind that everything might be deleted in the blink of an eye and snowball into a bad day - bleh!

It looks that way. I've traced it to some .png files that I was using for splash screens and icons. Changing the file formats to .jpg eliminated the false positives. Thanks.