Fix Microsoft.Windows.ShellExperienceHost and Microsoft.Wind

This vid helps Fix Microsoft.Windows.ShellExperienceHost and Microsoft.Windows.Cortana applications need to be installed correctly when running Windows 10 Start Menu.

Method 1: run the System File Checker (aka, sfc /scannow) as the admin user.

See more info@ goo.gl/S90cSN
Restart after the scan is complete.
Method 2: Repair Windows Image. Run the below command as the admin user:
Dism /Online /Cleanup-Image /RestoreHealth

Restart after the scan is complete.
Method 3: With PowerShell, run the following command as the admin user:
Get-AppxPackage Microsoft.Windows.ShellExperienceHost | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
Get-AppxPackage Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"
Restart your computer and check.
Method 4: If the above methods did not help, backup your data and launch the "Reset This PC" option or restore your system.
Other voices:
1. check & install all the pending updates.
2. create a test user account, log-in with that account.
3. Run Microsoft's Automated Troubleshooter@ aka.ms/diag_StartMenu, if you too met "Critical Error – Start menu and Cortana aren’t working. We’ll try to fix it the next time you sign in".

4. Assure KB3156421 (OS Build 10586.318) has been installed on your computer.
5. If you got Dropbox for Windows installed, remove it with the recommended uninstall tool PRO in this video guide.
6. Try entering Windows Safe Mode.

See useful tips@ support.eset.com/kb2268/?locale=en_US.