I puzzled over the nomenclature for a moment before realizing what TermoZour meant, and thought I'd post this to help others who might misunderstand. I posted this mainly to clarify that the explorer.exe 'folder' referenced above is in fact a subkey. I created a System Restore Point then used regedit to delete the explorer.exe subkey from HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution.options and haven't had the problem since then. Finding 'Windows Explorer' in Task Manager, right clicking and selecting 'Restart' would resolve the problem, but only for a little while. In my case, explorer.exe didn't stop running, but the task bar was no longer updated (clock was behind, notification icons out of date), I couldn't use alt-Tab to move between windows and holding the mouse cursor over icons in the status bar didn't display the associated window. Microsoft Store App not working/ Microsoft Store App is not launching Every time you try to run Microsoft Store App on Windows 10, and if it does nothing or doesn’t launch at all then you have reset the app so that app can be reinstalled and revert to default settings. My brand new PC running Windows 8.1 had a problem with Explorer.exe not responding, and it persisted after I upgraded to Windows 10.
