Error in cgi file


We have a problem with the web interface. Sometimes are shown the services and the hosts and other times when we refresh the page the information dissapear and shows the following message:

“check the HTTP server authentification requirements for accessing this cgi and check the authorization options in your cgi configuration file”

We have still authorized our users to be able to see all the information in the cgi file.

Can you please help us?

Thank you!!