Fix Outlook connection problems in Office 365 and Exchange Online

If you're using Outlook to access your Office 365 email account or another Exchange-based email account, and you're having problems, we want to get you back to sending and receiving email as quickly as possible.

Note

If you're looking for help with Outlook.com, check out Help for Outlook.com. > If you're looking for help with Outlook for Mac, check out Outlook 2016 for Mac Help.

Let us fix your Outlook connection problems for you

We can diagnose and fix several common Outlook connectivity issues for you. If our automated tool can't fix your issue, or you'd like to fix it yourself, see the next section.

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Fix software update and profile issues

Out-of-date software and corrupted Outlook profiles are two of the most common issues that can prevent you from sending and receiving email. If you're an admin with multiple users reporting problems, you also should check for service issues with Office 365.

Common Outlook fixes
Monitor Run Windows Update
If your Outlook client software or Windows operating system software is out of date, you might have problems sending and receiving email. For Windows 8, use the following steps to run Windows Update. For instructions for Windows 7, see How can I tell if my Windows computer is up to date?
Swipe from the right side of the screen, and choose Search.
Type Windows Update in the search box.
Tap or click Settings, and then tap or click Install Optional Updates. You might need to restart your computer.
Shows symbols of screwdriver and wrench. Repair your Outlook profile
An Outlook profile is a set of configuration information that includes your user name, password, and file storage location. Repair your Outlook profile by using the following steps.
Choose File.
Choose the down arrow for Account Settings, and then choose Account Settings.
On the Email tab, choose your account (profile), and then choose Repair.
Follow the prompts in the wizard, and when you're done, restart Outlook.
Settings Check for service issues
Admin only: If more than one person in your organization is experiencing email problems in Office 365, it could be due to a problem with the service. Go to the Office 365 service health dashboard page (admin sign in required), and check the status of the services under Exchange Online.