If deleting a specific windows Update is what you want to do, that's possible. Just figure out which one it was @
Mystical
To uninstall it
>go to settings
>click update and security
>click Windows Update
>click on Advanced Options
>click on View your Update History
>click on Uninstall updates
>Uninstall the update.
(picture is from my tutorial thread on fixing white screen flash trainers)
Also if this is a virus, then you need to get something to scan for rootkits. I suggest:
https://www.bleepingcomputer.com/down...-anti-rootkit/ (Bleepingcomputer is a credible site for specific anti-virus software, everyone uses it) Also mke sure to follow the tutorial on the page for fully getting rid of the virus if you have one.