AVCertClean searches for valid security software that is marked as untrusted due to an infection. It can then restore that software to trusted.
AVCertClean is portable. Simply double-click it to run, and you will be told if you have this issue. It accomplishes this by searching for legit security companies certificates that are marked now as untrusted and reverting them back to trusted. This is particularly useful if your security software is disabled preventing you from running it.
Note: Windows Defender will detect this as infected. This is common on unknown, niche tools and is a false positive.
Freeware
https://fr33tux.org/post/avcertclean/
