Troubleshooting: Why am I prompted to log in when I open a system stored display or system document?
Usually this occurs because the System Stored Display or System Document was created with a connection that saves the username, password and version.
The solution is to recreate the Stored Display or Document with a connection that does not save the username, password and version information. Also, ensure that all users attempting to load the Stored Display or Document use a connection that does not save the username, password and connection information.
When recreating the Stored Display and/or Document, it is best to save it as a .mxd and then reload it with the correct connection and resave it as a Stored Display or Document.