Welcome to the club. For 11 years we have used ATX on a terminal server, though they don't claim to support it, but it always worked until they switched to the crappy Raven database this year. The first initial install of the program up to the 12.7 version works multi-user in terminal server. However I could not install the 12.8 or 12.9 patch on my server without rendering the program useless. On another test server, once 12.8 goes on, it seems to change a registry key that makes the program look for other running instances. Once that happens even after uninstalling and deleting every file installed still I get that same message even at the initial install. So in a nutshell they have shut the door on use multi-users who use terminal services. A stupid careless move that will cost them many customers. To e-file I have to export the 4562 held returns over to a function machine with 12.8 running just to e-file. Even in their ideal installation environment, the program sucks and is unstable. Next year's release should be absolutely at no charge to the many thousands of customers who they have basically destroyed their business this year. If they are not going to allow multi-user environments another company will have our business next year, we will not waste resources on using their software like it's 1995. Total lack of any due care during development. Did you notice the tech's blog at ATX? He mentions it taking 2 hours for QA to approve and release the update? What type of testing is that? I could barely open the program and look at 10 returns in that short length of time.