Learn how to reinstall Windows on your PC and how activation works after it's installed.

Learn how to troubleshoot problems updating Windows. Find answers to common questions and issues installing Windows updates.

Experience Microsoft Copilot on windows devices using the Copilot app! The Copilot app helps you get answers and inspiration from across the web, supports creativity and collaboration, and helps you focus on the task at hand.

If you're trying to add your Outlook.com account to Outlook or another mail app, you might need the POP, IMAP, or SMTP settings. You can find them below or by viewing them in your Outlook.com settings.. Outlook and Outlook.com may be able to detect your account's mailbox settings automatically, but for other non-Microsoft accounts, you may need to contact your email provider for their settings.

Defragment your Windows 10 PC. Optimizing your drives can help your PC run smoother and boot up faster.

Add voting buttons to a message so that recipients can vote; results are tracked automatically in Outlook.

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Your Phone is now Microsoft Phone Link! Learn more about our recent name change for our PC and Android mobile apps.

There are two ways to open Registry Editor in Windows 10: In the search box on the taskbar, type regedit, then select Registry Editor (Desktop app) from the results.

Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.