Microsoft Outlook Says Working Offline

The user faces this problem when there is a problem with the mail server. If you would like to verify this, please log in to your account. Check if you can send/receive emails. If you don't receive it, the mail server may be to blame then, contact your administrator. This blog post explains a solution to Outlook Stuck in Offline Mode in a direct manner. Two best methods are given here to switch from working offline to online.