I am developing a database and when I install the program on a user's pc who is using an earlier version of office or access, I get the error message"object or library cannot be found" . Having done some research I found that the object reference to Outlook is missing on the other user's pc. I can select outlook object from the VBA editor on their pc and the program works. However if I deploy an update the same error occurs. Is there code I can put in place to check the outlook reference on the users pc to avoid this error? Thanks again for your help.