The folders of Outlook (Inbox, Calendar, Contacts, etc…) are in English but I’m using a Dutch version of Outlook. I cannot rename these folders like I can with my other folders (the Rename option is grayed out).
How can I match the name of the folders to the language of Outlook?
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
(you can also type this directly in the Cortana Search box in the Taskbar)
Start Screen-> type;
As soon as you start typing, a search box will automatically appear.
Note the space in the commands listed above.
Note: To freely rename the names of the folders independent from your Outlook or mailbox language see; Rename the default folders