Windows 10 Start Menu and Modern Apps do not open

Out of a sudden, the start menu on my Windows 10 computer didn’t respond anymore. I noticed I was unable to open the calendar anymore as well. It caught my eye the system installed a patch (KB3093266) yesterday and decided to remove it first before continuing with my troubleshooting. After removing the patch and rebooting the system, the start menu was still not behaving as it should.

I decided to boot the computer in “safe mode” (msconfig > boot) and check if the start menu works in safe mode, which was not the case. I have to admit, it was a long shot… but you never know!

Eventually after some Google magic I found the solution on the Microsoft forums. Open a PowerShell with administrative privileges and execute the following command: “Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}“.

The execution can take some time (up to 2 minutes). Any errors listed in the powershell command can be ignored. Upon completion the Start Menu and the Modern Apps open successfully again.

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