For some users, e-mails do not arrive without manually sending and receiving them. If you are having sync issues, you can force a modern authentication troubleshooting manual sync by selecting the Sync button via the View tab on the Ribbon. A status message appears at the bottom of the message list while Outlook is syncing.

Repair your classic Outlook program

And in most cases, that’s where it belongs. For more information on creating a new email profile, see Create an Outlook profile. Please go to Reset a forgotten Microsoft account password for reset cached Exchange mode more information.

Make sure you are connected to the Internet

But every once in a while, the Microsoft filters get it wrong and accidentally label a normal email as spam. To start Outlook in safe mode, press the Windows key on your keyboard. In the search box, type outlook.exe /safe, then press Enter.

Check your blocked users list

Articles, examples, tutorials, and inspiration from our emailing experts. Create your account and connect with a world of communities. Find solutions to common problems or get help from a support agent. Occasionally, the Outlook program may need to be repaired. Repairing is a simple process but may take as long as half an hour to complete. For more information, see Repair an Office application.

Create a new Profile

For more information, go to Reduce attachment size to send large files with Outlook. I deleted the Yahoo and Google accounts from Outlook and set it up again and that didn't fix anything. I uninstalled the New Outlook app and reinstalled it and that didn't fix anything. I am fairly sure it is something in my Microsoft account since all 4 of my Windows computers stopped working for the email at the same time. I have another Windows computer with a different Microsoft account and that is working fine.

• I uninstalled the New Outlook app and reinstalled it and that didn't fix anything.
• Articles, examples, tutorials, and inspiration from our emailing experts.
• If that message has an attachment that's larger than 20MB, delete the attachment and either attach a smaller file or attach a link to the attachment.
• Which means that you won’t be able to receive new messages.
• For more information on creating a new email profile, see Create an Outlook profile.
• For many types of email accounts, classic Outlook stores your messages in a Personal Folders File (.pst file).
• I have another Windows computer with a different Microsoft account and that is working fine.

For more information, visit Add an email FixTechGuide Office 365 troubleshooting account to Outlook for Windows. If that doesn't fix the problem, see the next section. To get help and troubleshoot other Microsoft products and services, enter your problem here.