Windows 10: Task bar malfunction, Windows 10

I'm running Windows 10 and the taskbar has started misbehaving. In particular, the Start button has become unresponsive all the time and the File Explorer icon intermittently so. Any ideas?

:)

 

Why is my task bar always malfunction!?

My task bar and search engine was malfunction second times already!

The first time I got my friend to help settle down, things gone well until this morning!

The start button and search engine can not use, I cant even right click the icons on task bar!!!!

 

Windows 10 Broken Task Bar

I am seeing the following malfunctions associated with Windows 10 task bar and launching of functions from the task bar. These only occur in only one of four user profiles on the computer; everything seems to work ok in the other three user profiles.

- L click START icon results in a flicker of the 'hourglass', then nothing (R click START icon brings up the expected list of items)

- L click SEARCH icon results in a flicker of the 'hourglass'

- L click NEW NOTIFICATIONS results in a flicker of the 'hourglass'

- R click NEW NOTIFICATIONS brings up menu, but selecting Open Action Center has no result

- R click application shortcut (eg. excel) should display recently opened files, but has no result (L click application shortcut launches application as expected)

Launching EDGE from the task bar opens the EDGE window momentarily, but it closes immediately.

The WINDOWS key should also launch the START menu, but has no effect (only in the malfunctioning user profile)

My questions are - are others seeing similar problems w/ Windows 10, and any status on solutions from MS.

Also, looking for suggestions on how to easily duplicate the broken user profile, and thoughts on whether that could cure these issues.