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

To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? and select Yes. To contact us in Outlook.com, you'll need to sign in. If you can't sign in, click here.

You can use the Inbox Repair tool (SCANPST.EXE) to diagnose and repair errors in your Outlook data file. The Inbox Repair tool checks the Outlook data files on your computer to see if they're in good shape.

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).

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

Use Deployment Image Servicing and Management (DISM.exe) to install the target update. DISM will use the folder specified in PackagePath to discover and install one or more prerequisite MSU files as needed. Or use Windows Update Standalone Installer to install the target update.

If you urgently need to mitigate the issue, use Outlook Web Access (OWA) or New Outlook to send emails that require .MSG file attachments. Alternatively, you can revert Outlook Desktop to the builds prior to the issue.

Re-registers Word in the Windows registry. This switch starts Word, runs Office Setup, updates the Windows registry, and then closes.

Learn how to open encrypted emails. Outlook protected messages have a banner at the top of the message that informs you of restrictions. Outlook should open the message like normal. Otherwise, follow instructions for opening encrypted or protected mail.

Describes the methods that you can use to prepare and send samples of malware (such as viruses, spyware, worms, and adware) to Microsoft.