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 Email tab, choose your account (profile), and then choose Repair.

If you have a new password, if your email provider has asked you to change settings, or if you're having problems with sending and receiving email, you can change your email account settings through Mail in the Windows Control Panel, or from Outlook. Using new Outlook? Check out how to customize your experience, import settings and add an account.

There are three steps you can take to try to get Outlook working again. Occasionally, classic Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background.

Execute the command SaRAcmd.exe -S ExpertExperienceAdminTask -AcceptEula. Collect and share with us the HTML file located under the path: %localappdata%\saralogs\UploadLogs. For more information the full article for the Command-line version of Microsoft Support and Recovery Assistant: Enterprise version of Microsoft Support and Recovery Assistant.

One of the following security warnings appear: A program is trying to access e-mail address information stored in Outlook. If this is unexpected, click Deny and verify your antivirus software is up-to-date. A program is trying to send an e-mail message on your behalf.

Email messages that include attachments are identified by a paper clip icon in the message list. You can use a browser and your OneDrive to view, edit and send attachments with your Outlook Web App, Outlook on the Web or Outlook.com accounts.

Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

We have multiple tools to help you automatically diagnose an issue, troubleshoot, and fix problems with Outlook. Note: Classic Outlook troubleshooters are not applicable to new Outlook for Windows. Check to see if the new Outlook toggle is turned on or off. If it's on, please go to Troubleshooting Outlook issues.

You can easily change your default e-mail client through the Internet options. 2] Open Internet Explorer, click the Tools menu, select Internet Options. Click Programs tab and select your email client from the drop-down list. Once selected, click OK / Apply button.

Try these solutions if sent messages in Outlook.com come back with a "delivery failed" error.