Outlook users may not be able to send emails at the moment. The behavior is caused by a bug that affects classic Outlook. Specifically, you may see the issue after updating classic Outlook to ...

We suggest the following fixes if you get This is not a valid file name error in Outlook when sending email: Remove invalid special characters from the file name ...

Learn how to use Outlook 2025’s new mail merge feature for personalized, secure, and efficient bulk email communication.

Why is my Outlook email not showing up in the Control Panel? There could be several possible reasons why there’s no Outlook mail icon in the Control Panel: Outlook wasn’t installed properly.