We use several Citrix terminal servers with a provisioning system (all servers start from the same vdisk and so they are all identical). Sometimes all users on one of these servers receive a sign in window when starting Adobe Acrobat. As all the servers are rebooting automatically each night, the problem is gone on the next day, but it shows up again some days or weeks later. We have per-user licenses for all our users. I need a solution for this problem please!