Copy the data to a folder in your own mailbox and export from there.

Signature
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I have access to other user calendar but I cannot manage to export his
> calendar to Excel. The export function only lets me export my own calendar.
> I have enough access to edit his calendar.