Au_.exe MDE

When I try to uninstall something I got this virus located on appdata/local/temp/~nsu.tmp/Au_.exe. But when unisntall other program it work. Is this a false positive?

It is just a temp file use by the nullsoft installer when you try to remove something.

Report it to avast > https://www.avast.com/false-positive-file-form.php

I got this virus located on appdata/local/temp/~nsu.tmp/Au_.exe.
what does the message from avast say? ... post a screenshot
Is this a false positive?
You can upload and check file(s) here www.virustotal.com you may post link to scan result here