Windows 10 Search can't find ANY applications
1.Open an elevated Command Prompt window (press win + X, and then press A)
2.Type start powershell and press enter
3.Run the command (in one line):
Get-AppXPackage -Name Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
Cheers
RescuePC