I am using a Lotus Notes 8.5.2 client on a Windows 7 computer in a corporate setting with a number of Domino servers, with two primary ones that I replicate between. I just recently had my OS upgraded from Windows XP. Nothing else changed, as far as I know, with my Lotus Notes (unless my user file locations changed, or something). I have my Replication settings on my mail file to replicate using one of the preferred servers and then choose among others if not successful. This worked fine (no error) before my OS upgrade. Now, I cannot replicate without getting the error message "Invalid or nonexistent document," and each time it indicates it's failed with the primary server. On top of that, when I go to view the Replication History, it indicates a successful "Send" action on the same server, but also lists "Never received" actions on the same plus other servers. I even successfully refreshed the design template from the primary server. But I still get the same Replicator error. Any thoughts as to what I, as a user without admin. rights, can do on my own? Or, must I contact my company's IT support? If the latter, any advice you might have that I could pass along to them? Thanks in advance for your help.