Updated with 12+ Solutions (Older has 3 Solutions): https://youtu.be/ak2kEis8gEA

*** Some people report that the fix works, but their WiFi stops working after the fix; if this happens right-click on the Start button, click on Device Manager, under Network Adapters find your WiFi device; right-click on the device and choose uninstall; after it is gone from the list, go to the Action menu at the top of the Device Manager window and click on Scan for Hardware Changes; when the device is back in the Network Adapters list, try your Internet again (you may have to reboot); Let me know in the comments if this works for you! ***

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INSTRUCTIONS
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Here is the powershell command:

Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register /”$($_.InstallLocation)//AppXManifest.xml/”}

Here is a link to the batch file:

http://click4this.info/10services_default.bat

Here are the pages that helped me get these steps to fix the start button in Windows 10:

http://answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_desktop/fix-windows-10-taskbar-not-working-fix-build-10074/6b13e8b6-b30b-4e80-aa7c-a4a3939195ea?auth=1

http://www.tenforums.com/general-support/12321-taskbar-start-button-not-working.html

Thanks to users RolanSW, flhthemi, and AveYo for sharing!

Windows 10 Start Button Not Working
Cortana Not Working
Microsoft Edge Not Working
Windows Store Not Working

Icons not showing, software not starting, not loading, not running!

May happen in: Windows 10 Build 10586, 10525, and more.

May occur after Windows Update runs.

If the above does not help, create a new user, make the user an administrator, and transfer your files to the new account.

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