Fix there is no default mail client in Outlook


When you get this error message:

Microsoft Office Outlook Error

Do the following:

  • open the registry editor
  • navigate to the key HKCR\Installer\Components\F1291BD604B860441AB89E60BDEE0F9C
  • right click on the key, open permissions
  • add the group “Users”, allow “read”, click “Ok”

And when you now open Outlook, the error is gone.