Do a System Restore to a time before the updates. (Windows creates a restore point before doing updates so use this)
Install the updates one by one until the system behaves incorrectly. It is probably one of the .NET framework updates.
FYI....instead of a System Restore you can remove the updates by going to the Control Panel....Add or Remove...Check “Show updates” in the upper right corner. You will see all of the latest updates by program and date. Select the desired update...click “remove” and it’s gone. This method is much quicker than doing a “System Restore”.