I get the following error when attempting to close/save a note In Outlook 2000. The error message is "The messaging interface has returned an unknown error. If the problem persists, start Outlook again." This seems to occur when more than one Notes windows are open or when the Note is relativley large i.e. more that 10 or so lines. MSKB references similar messages but not ones occurring in Notes. I am running Windows 2000 and Office 2000 SP1. This occurs on both my Pentium 3 500Mhz desktop and my Inspiron 7000. Any thoughts?