Cortana giving you fits? Not working right or so it seems?

You can run a PowerShell command to reregister Cortana with the system which essentially resets her capabilities.

In a PowerShell window (run under the administrator context), run the following command:

                              Get-AppXPackage -Name Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

You can also wrap this command in a script to make it happen remotely to give aid to a remote user.