The Windows File Explorer, sometimes just called File Explorer, doesn't work or doesn't work as expected. This could be a patch that didn't fully install or some other problem with Microsoft Windows. I've found that you can use (at least some versions of) Internet Explorer, in some cases, to browse files on your computer.
One way to do this is to use the command line (if you can run cmd.exe or powershell.exe) like the following: %program files%\Internet Explorer\iexplore.exe" -e -root C:\.
You can pass in alternate directories as well, like your Documents folder using %program files%\Internet Explorer\iexplore.exe" -e -root %USERPROFILE%. This works since the %USERPROFILE% variable is set by Windows when you log in to Windows by entering your username and password.