How Does Using System Restore Affect My Personal Files and Apps?
When you restore your PC to an earlier restore point, any apps you installed after that point will get uninstalled. Apps that were installed when that restore point was created will still be in place. Apps that you uninstalled after making that restore point will get restored, but with a very big caveat. Since System Restore only restores certain types of files, programs that get restored often won’t work–or at least, work properly until you re-run their installers.
Windows does let you see exactly what programs will be affected when you go through the process, but it’s a good idea to restore to the most recent restore point possible to minimize problems with apps. It’s also a good idea to create manual restore points before you undertake big installations or settings changes so that you know you can revert to a very recent restore point if you need to.