We are using Exchange Server 2007 SP1 with Outlook 2007 as the client. I have a user who gets the following prompt whenever he opens some of his recurring meetings in his calendar: "The form for this item has not been registered in this folder or in your company's forms library. Because this item contains macros, which could contain a virus harmful to your computer, you may not want to run the macros. If you are sure this item is from a trusted source, click 'Enable macros'. Otherwise, click 'Disable macros'. " All the meetings that he gets this alert with appear to have been the result of accepting recurring meeting requests from several other users on the same Exchange Server, though not all such recurring meetings in his calendar have this alert. There appear to be several different sources for the meeting requests, so I think it is likely that there are actually no custom macros involved. I gave myself rights to his mailbox and created an Outlook profile on my own workstation with his mailbox as the only mailbox in the profile, and I do NOT get the alert when accessing these same meetings on his calendar. Any idea why he is getting these alerts? Thank you very much for your help with this.

Hi, The Outlook object model offers a programmatic solution to this problem. When calendar items are deleted or moved using the object model, Outlook internally knows to suppress any user prompts. http://support.microsoft.com/kb/2008840 Also run below command to clean up some outlook cache and check the issue. outlook /cleanreminders outook /cleanfreebusy outlook /cleanprofile outlook /cleanmrecords Anil