Disable IPv6 (if applicable) General fix for Outlook not connecting to Server Let’s take a look at the description of the process involved concerning each of the listed solutions.

Send test e-mail message: The connection to the server was interrupted. If the problem continues, contact your server administrator or Internet service provider (ISP).

Services & Software A fix for Outlook 2007's failure to link to Exchange Server 2003 The inability to connect from a Vista PC to an Exchange Server may be due to a conflict with the Windows Firewall.

If Microsoft Outlook always starts online, check that your Internet connection is reliable. Also make sure that your server settings are correct, checking with your employer or Internet provider ...

How to Fix Outlook.com Issues If the Outlook.com status is up and running but you can't sign in, the problem may be with your computer, network, or service provider.

Mac 911 How to fix a Microsoft Outlook login that won’t work due to local port conflicts on your Mac A not-very-obvious local web server may prevent proper Outlook authentication.

Or maybe your emails are getting caught in the Outbox — your intended recipient might think you're ignoring them, which could quickly lead to unintended consequences.