Update to Invitees not Working Properly (Outlook 2000 SR-1)

[feedee]

I have a user who is set up as a delegate on another user's calendar. When User 1 makes appointments for User 2 she includes herself as an invitee. However, when user 1 adds information or updates the appointment on User 2's calendar Outlook is not updating information on user 1's calendar as well. User is not receiving the send update tab and the invite attendees tab is greyed out.

Any suggestions?

[OldDog]

Have you looked at User1's permission level? Try editor, maybe.

[feedee]

Actually it's not a permission level. We updated User1 to Windows 2000 and Outlook 2000 SR-1, but User2 is still on Windows 95 and Outlook 2000 (no service pack). User1 did not have the issue before the upgrade. We have checked all settings and they are the same as the previous version, but the program is acting differently.