I have developed an app in C# for my company. I install the app on a server then attempt to run it from a Windows XP box. I get a message that the publisher is unknown do I want to run the app. When I click run the app runs fine. Since there will be many users running the application, most of whom are not computer types, I would like to avoid this security message if possible. So far all I have been able to find is purchase a certificate and sign the file, however $350 a year for an internal application is not going to fly with my manager. Is there any other way to accomplish bypassing the security warning? Any help would be greatly appreciated.