Some of our accounts seem to have a strange language problem with Outlook. The name of the default datafile, usually called "Mailbox - username" as is visible in Outlook is in some cases in Dutch "Postvak - username". However all folder names are in English as they should. When I checked the mailbox settings in the Exchange management shell for those accounts, I got: Languages : {nl-NL, en-GB} and for accounts with the correct "Mailbox - username" Languages : {en-GB} How could this have happened and how can I change that name back to english? I have already changed the language for all those accounts to en-gb.

Hi, Please create a new profile and test the issue again. Actually, its a MAPI attribute, we could modify it ourselves: 1. Please download MFCMapi, and run it. 2. Go to Session -> Logon and Display Store Table. 3. Choose your mailbox and find the property PR_DISPLAY_NAME. 4. Change the name. Hope this helps. Thanks, Elvis