AutoCAD 2021 with its main executable acad.exe is detected as a potentially unwanted app by Windows Defender Antivirus as Program:Win32/Unwaders.A!ml
It’s said that this program has potentially unwanted behavior. Of that I can sometimes agree.
“Win32/Unwaders.A!ml is a detection for computer adware that shows unruly advertisements on the infected computer. This threat usually penetrates the computer is several ways including malicious ad campaign and software bundling method.
There is really no difference how Adware:Win32/Unwaders.A!ml attacks as compare to all threats from this same category. All of them are taking advantage of software bundling hoax to sneak onto computer even without permission from users.“
Personally I think this is a false positive. It happens once in a while even with our apps that Antivirus programs think they are a threat even if they are not. Usually it is fixed by an updated Antivirus definition within a few days.
Update: Now also AutoCAD 2020 is detected in the same way.