Something very strange has just started happening to some of my users that use OWA for email access. I am running Exchange 2003. When a user logs into their email account through the browser they see their mail fine. However, as soon as they try and open an email, or go to contacts, or calendar, or options a new browser window appears that displays the original OWA logon screen. If they log on to that screen the option they selected appears.
It happens if I login with premier or basic options.
It is not happening for all my email uses. For example, I can logon with a test account I have with no problems. I can navigate through emails, contacts and options with no problems.