You might encounter a situation where you log on to your Windows 10 client and the Start menu is unresponsive and the taskbar remains empty.
The following two actions help to recover from the situation.
Step 1
Open an administrative PowerShell window and execute the following command
DISM /Online /Cleanup-Image /RestoreHealth
Restart Windows and check if the issue has been fixed.
Step 2
Reinstall (fix) all Windows apps. This step requires internet access, as all sources are downloaded using the local app manifest information
Open an administrative PowerShell window and execute the following command
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}
Be patient and wait until the app download and installation process has been completed. Just ignore any error message and restart Windows.
The first step might fix the issue already. if this is the case, do not execute the PowerShell cmdlet described in step 2.