Problem

--Clicking on the Log Out link pops up a dialog box asking for username and password. If the authentication method is set to Web, and the anonymous CGate is disabled, then whatever is entered into that dialog box will be rejected.

Resolution

* The cause of this is a limitation in the Basic Authentication method.

* This issue occurs only with Internet Explorer. In Firefox, entering the username and password again in this dialog box will successfully log out the user.

* In Internet Explorer, then, the recommended workaround is to close out all instances of the browser, which will ensure that the session is invalidated (i.e., that opening the browser and going to the site will require a new login).

* You can instead use cookie-based or session-based authentication to avoid this issue.