Select this option if you use Outlook Web App on a public computer. Be sure to sign out when you've finished and close all windows to end your session.
Select this option if you're the only person who uses this computer. Your server will allow a longer period of inactivity before signing you out.

The light version of Outlook Web App includes fewer features. Use it if you're on a slow connection or using a computer with unusually strict browser security settings. We also support the full Outlook Web App experience on some browsers on Windows, Mac, and Linux computers. To check out all the supported browsers and operating systems, click here.

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