There were no missing files on the system.
I also found about 30GB of temporary files in the hidden folder C:\Users\"username"\AppData\Local\Temp.
I deleted all of the temp files, skipping the ones that could not be deleted because they were in use.
Just to be sure, I also run "SFC /scannow". That takes about 10 minutes.
System is running without problems.
This. Don’t need any third party product. Just use the tools you already have.
This. Don’t need any third party product. Just use the tools you already have.