Error deleting reminders folder

Sep 20 at 6:55 AM

I was having some issuses with users where their reminders in outlook stopped popping up. Having checked everything else, I tried deleting the reminders folder via mfcmapi tools, and rebuilding via /resetfolders. Success! The reminders started popping up again for the affected users. This worked for two of the affected users. However, I have a few more with the same issue, all on the same exchange server, but now when I try to delte the reminders folder, i get the following error, and the folder is not deleted. Why am I not able to delete the folder?

Function lpParentFolder->DeleteFolder( lpItemEID->cb, (LPENTRYID)lpItemEID->lpb, lpProgress ? (ULONG_PTR)m_hWnd : NULL, lpProgress, ulFlags)
File MsgStoreDlg.cpp
Line 924

Any help would be greatly appreciated.