If you start MSFS 2020 and find that it wants to download the simulator again, there is a ‘BROWSE’ button available on the download option screen. It is very good at freeing up space by removing junk. ASC is safe to run provided you don’t use the registry cleaner. I might occasionally use a tool like this to diagnose a problem however, I noted that if I run the registry cleaner that it would remove a crucial registry entry on my ‘C’ drive related to MSFS 2020. I have tried ASC from iOrbit within the last eight days and noted it has a registry cleaner. Unfortunately these useless apps have gazillions of downloads giving the false impression that they are needed Use the native functions and all is good. Android is very very good at managing resources and these apps do nothing but make more work for the OS.

The Google Play store is FULL of “cleaners” and “RAM cleaners” with pretty graphics of animated brushes, rockets and trash cans. Going off on a small tangent: same story with Android.

Like Crucial Storage Executive or Samsung Magician. If you have an SSD download the monitoring program from the manufacturers website. If you must defrag (which again I feel is not needed on todays systems even on spinner drives) use the native app that comes with Windows.

Like 4GB.) so you can regain a lot of space. (Tip for those who might not know: Click the “Clean up System Files” button and you might well see Windows Update files taking up a bunch of space. If you really want to clean just use the built-in Disk Cleanup. Windows 10 is very good at taking care of itself. All these “cleaners”, are completely unnecessary and do nothing but cause trouble.

Advanced systemcare registry cleaner