I'm receiving an error message like the image found here. The error says Server Error in '/' Application or Runtime Error
All Versions and Products of Foundation
An error of any nature on the Windows server in question
To determine the actual error message in the least intrusive manner, please work with the IT administrator that has access to the server. On there, go into the Event Viewer, and then expand Windows Logs, and click on Application.
To ensure you get the correct message, replicate the issue and then refresh the event viewer. Usually the top error message or warning message will contain the actual message being sent. This can then be analyzed for further troubleshooting.