When trying to launch the troubleshooter for System and Security, you get this message in Windows 2012 R2:
There are currently no troubleshooting packs available for this category
I have no idea about how to install missing troubleshooting packs, and couldn’t find anything on the internet (if you find out how to install missing troubleshooting packs for the System and Security category, please share with the forum).
What I did manage to find, was a downloadable troubleshooter for Windows Updates, which was why I was trying to run the troubleshooter in the first place.