One of my users has suddenly developed a second Calendar which is now being used as the default calendar by Exchange, although his original calendar still exists its juts not the default one. It does not appear to be an Outlook profile issue as this issue is also reflected in Outlook Web Access and when I connect to his Mailbox using MFCMAPI I see 2 entries called Calendar under the IPM Subtree. Does anyone have any idea how to fix this? If I delete the rogue (new calendar) using MFCMAPI will the old one become the default again? Any help is appreciated Thanks

I would export the calendar to a pst for a backup, then try to delete the calendar either through Outlook or Mfcmapi. If necessary, and you can, delete both and start Outlook with the /resetfolders switch.

Thanks for the reply much appreciated thought that's what I might need to try