We're running Outlook 2k as a client for Exchange5.5. One user (yes, the president - it's always the president) has corrupted his calendar. The error message is; "Unable to Display the Folder. Out of system resources. Close some windows or programs and try again." My first thought was that this is a corrupt .pst or .ost, but if I log in as him, open his email from my machine or from a WinTerm through a Citrix log in, I get the same message. I created a second calendar and can see his tasks in it, but not the appointments. I can see the appoitments in outlook today. Any ideas would be appreciated.