Windows 10 start menu not working

Firstly, I am aware of this question possibly being duplicate of

Windows 10 Start Button Repeatedly Becomes Non-Responsive

and

Windows 10 Start Menu Stops Working.

The second links says

Try running CMD as Admin, typing powershell, and entering this command: Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

Taken from:
http://forums.windowscentral.com/ask-question/370916-start-menu-not-working-windows-10-build-10240-a.html

However, I am not sure about the 'DevelopmentMode'. This is not a pre-release version. I recently upgraded from Windows 8.1 to 10 and initially start menu and taskbar right-click were working fine. Couple of days ago the problem surfaced. Is there any new solution to this problem?

Till now, I performed update and SFC /scannow but no luck.