Windows 10: Started 10/09/2019 Unable to open File Explorer from desktop or taskbar or from start also...

Started 10/09/2019 Unable to open File Explorer from desktop or taskbar or from start also the Firefox is gone from taskbar

:)

 

Cannot open File Explorer from Taskbar or Start Menu

I am unable to open File Explorer from the Taskbar or Start Menu from the Microsoft Account. I do have a local admin created and that account is fine. I have unpin File Explorer from the Taskbar and then open an file and then re-pin File Explorer and still
same issue and also I had run the sfc /scannow from the Command prompt as the admin it did not find any problems. I did upgrade Windows RTM to Windows 10 TH2 and it fix the issue until I logged out of the account and logged back in and the same issue came.
I tried the step from
http://answers.microsoft.com/en-us/windows/forum/windows_10-desktop/cannot-launch-file-explorer-from-taskbar-in/d2c9f0c0-e1ab-47cf-8b68-b19d748f2734?auth=1 and they did not work also have the same issue in safe mode. Also I do not want Microsoft standard
answer to delete or create a new Microsoft Account profile.

 

Taskbar hides and shows itself after opening start menu.

Steps:

1. Using HDMI for a second monitor.
2. Open start menu using the icon.
3. Close start menu using the icon.
4. Click anywhere other than the task bars. (e.g. an open window, the desktop, even the first monitor's desktop)
   
5. Taskbar on second monitor slides down to be hidden.
6. Taskbar then immediately slides up to reappear.

If after closing the start menu (step 3), you click on the taskbar, then click outside the taskbar, this behavior does not occur.

Performing the steps on the main monitor's taskbar does not produce this behavior.

This has been happening for as long as I can remember using this laptop (~3years), with different nVidia drivers and Windows 10 updates.

 

File Explorer won't open from Taskbar or Start menu.


File Explorer won't open from Taskbar or Start menu and right click on files and folders (In file explorer and on desktop) is not working and causes explorer.exe to freeze. File explorer does open from desktop folder and shortcuts as well as "open file location" in task manager. The problem goes away after restart but returns soon after. Restarting explorer.exe does not fix the problem.