SharePoint: " Cannot uninstall the LanguagePack 0 because it is not deployed"

Strange SharePoint error message:

Update-SPSolution : Cannot uninstall the LanguagePack 0 because it is not deployed.

The workaround seems to be Remove-SPSolution, Add-SPSolution, Install-SPSolution in place of Update-SPSolution.

Outlook-vinduet kan ikke åbnes

I dislike non-English error messages. So here's my contribution to trouble-shooting Outlook in Danish:

Problem: Outlook gir feilmeldingen "Outlook-vinduet kan ikke åbnes".

Løsning: Kør outlook.exe /resetnavpane én gang.