For some users, e-mails do not arrive without manually sending and receiving them. If you are having sync issues, you can force a Fix Outlook and Office365 Sync Issues 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

It includes a listing of your accounts, autocomplete information, and your name and initials. To repair your Outlook profile or create a new one, see Fix your Outlook email connection by repairing your profile. Go to your Outbox and then open the stuck email messages. If that message has an attachment that's larger than 20MB, delete the attachment and either attach a smaller file Outlook stuck updating folders solution or attach a link to the attachment. For more information, go to Reduce attachment size to send large files with Outlook or Exchange Online limits.

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

But if you’ve never cleaned your inbox, then you might have maxed out your storage limit. So if you’re waiting for an email from someone, you may want to check if the sender is registered on your blocked users list. But still, it’s worth checking if other users are currently experiencing similar issues with Outlook. Microsoft comes with a great option called Work Offline.

Can't send mail in Outlook.com

• 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.
• Some email providers (such as your ISP or even Gmail) won't let you send messages larger than a certain size.
• I have another Windows computer with a different Microsoft account and that is working fine.

For more information, visit Add an email disable faulty add-ins in Outlook 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.