why is my microsoft outlook not connecting to server

If you can send and receive mail on the website, then your mail server is fine. If email isn’t working on the website, call your technical support for your email service provider for help. If you can log onto your email from a website-for example, -check to see whether you can receive and send email that way. If your Internet connection is working, there might be a problem with the mail server. What follows are just a few examples of some of the possible reasons. There can be different reasons why you're disconnected from Outlook. We recommend always turning on Cached Exchange Mode with a Microsoft 365 account. Or contact the person who manages the Exchange server for your organization.

Follow the steps in Turn on Cached Exchange Mode to change that setting. If you don’t see the Work Offline button and your email account is a Microsoft Exchange Server account or a Microsoft 365 account, Cached Exchange Mode might be turned off.

But if the background is clear, you are connected. If the background of the Work Offline button is shaded (as shown in the image above), you're not connected.

Why is my microsoft outlook not connecting to server