Ordnername falsche Sprache - Foldername wrong language/english

By default, the names of the default folders will match the language of Outlook. However, if you have been using a different language of Outlook before when these folders were created, you’ll have to reset the folders to match the language of Outlook again by starting Outlook with the /resetfoldernames switch: Start-> Run (or Windows key + R) -> outlook.exe /resetfoldernames. Restart Outlook.