Erroneous Unauthorized user Message

I am getting an Erroneous “Unauthorized user Message” (SC 7.1) for various users, and I don’t understand why. As I search this forum, I see that others have encountered this same problem in the past - but I was not able to see where there was ever a resolution. Can someone please get me pointed into the right direction for getting this problems resolved? I have a big demo tomorrow, and I really need this issue resolved before then.

HELP!

Is it on your login application? Try turning security off from the login app.

If not, does the user trying to access the application has rights to access it?

regards,
Bernhard Bernsmann