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- Office 365 Main At its core, Office 365 is the same suite of Office products and services you recognize, now provided through the cloud. Through Office 365, Microsoft offers more features in and greater access to the tools you use, both at work and at home.
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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
Start with Managing Office 365 endpoints to understand our recommendations for managing network connectivity using this data. Endpoints data is updated as needed at the beginning of each month with new IP Addresses and URLs published 30 days in advance of being active.
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.
Outlook Office Online 365
| Let us fix your issue Support and Recovery Assistant for Office 365 | Need more help? Contact support for business products - Admin Help. |
Fix software update and profile issues
Outlook Office Online Signature
Out-of-date software and corrupted Outlook profiles are two of the most common issues that can prevent you from sending and receiving email.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
Outlook Office 365 Online Mode
| 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 Update instructions, see Windows Update: FAQ |
| Repair your Outlook profile | An Outlook profile is a set of configuration information that includes your user name, password, and file storage location. To repair your Outlook profile, see Fix your Outlook email connection by repairing your profile. |
| 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. |