Do you always install latest updates when you fix someone else's PC?
When you fix someone else's PC (locally or remotely), one of the best practices is always make sure it has the latest updates.
To achieve this, we run Windows Update and install all latest updates.
Warning: Of course if you are fixing a bug on someone’s PC, you should only update one piece of software at a time, so you know if an update fixes the problem. After that (if the company allows it), update all software to the latest version. If they get a new problem, then rollback.