I have Exchange 5.5 SP3 and many exchange clients using Outlook 2000 are getting 'Unable to update public free/busy data message' I checked at least 10 KB articles on this issue but non has resolved the problem. All users are not getting this message but some are getting 20 times a day this message.
I will appreciate if someone will guide me to resolve this issue. Anwar List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm