In Outlook, sometimes your outgoing messages get stuck in your outbox and just won't send. Learn about some ways to get them moving.

Learn how to fix Outlook.com email sync issues if you can't receive or send messages.

Check to see if the new Outlook toggle is turned on or off. If it's on, please go to Troubleshooting Outlook issues. As a first step, go to the Classic Outlook troubleshooters page and select one of the …

If you are having problems with Outlook, there are a few things we can help with to get you back to sending and receiving your email. Select a tab option below for the version of Outlook you're using. …

When this problem occurs, the message remains in your Outbox folder until you manually initiate a Send/Receive operation (for example, press F9 or select send or receive).

Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue. In Outlook, choose File. Choose Account Settings > Account Settings. On the …

Nov 3, 2025 · When you send or reply to an email you get a non-delivery report (NDR) error message. The issue may happen more consistently if the Outlook.com account is in an Outlook Profile with …

Did you get an Outlook not responding error? Is Outlook stuck on a screen that simply says "Processing"? Or does Outlook freeze or stop working when you're opening a file or sending an …

When you send an email and receive a delivery failure message, there could be several reasons. We've listed the most common error messages below, along with suggested resolutions.

For issues that are not covered on this page, we have multiple tools to help you automatically diagnose and fix a range of Outlook problems. [FIXED] Unable to save updates in Mobile devices settings for …

Oct 4, 2024 · If you're having problems sending or receiving email, read how to Fix Outlook.com email sync issues. Last updated: July 2025. Still need help? To get support in Outlook.com, click here or …