Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

Learn how to add members to your family group including child and adult accounts.

Learn how to view and delete your browser history and other history in Microsoft Edge.

Need help with an Xbox console, an Xbox game, or Xbox network? Find out how to get in touch with us.

How to track changes in Word using revision marks. Accept, reject, or hide changes made by others working in the file.

Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.

If you have multiple accounts in Outlook, when you compose a new email message, Outlook picks the default account as the From account.However, if you want to Reply, Reply All, or Forward a message, Outlook will send your message with the same account the original mail was sent to.For example, Cheryl has two accounts.

You weren't able to find your username. If the username lookup wasn't successful, try looking for your Microsoft account username within other products or services that you know are associated with that account.

Learn how to keep your Microsoft account safe, including making a strong password, identifying safe emails, and reviewing account activity.

If you need help with Outlook.com, you can read our self-help content, or get support via email.