I'm using Microsoft Windows Vista Premium Home O/S, system 64 based PC. I recently received a windows update notification to install Internet Explorer 8 for Windows Vista for x64 based systems. The install was successful. Since installing IE 8 I've been having an issue with Outlook Web Access (company's email to access and view mails remotely). I can log into OWA successfully. I can view mails in succession just by single clicking on one mail, then another. Here's the problem: When I double click on an email item to open the mail for better viewing I constantly receive the OWA login screen to enter my username and password. This only happens when I double click on an email item to open it up. If I just click on email items to view them one after another without opening them, then I'm not being prompted for log on credentials. I didn't have the above problem when using IE 7. Before entering my username and password at the OWA log in screen under 'Security' I select Premium and under 'Client' I select Private computer. I need help. So, what is going on here? Should I revert to IE 7 or what? I checked windows updates this morning and noticed I have an important update. Windows Service Pack 2 for x64 based Systems (kb948465) Should I install this update, and if so, will it rectify my problem? Any assistance will be truly appreciated. Thanks in advance.