Learn different ways to locate your BitLocker recovery key in Windows, and learn about how BitLocker might have been activated on your system.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Check the Xbox services, games, and apps for any service outages.

Learn how to check if your PC is capable of running TPM 2.0 or how to enable TPM 2.0 to upgrade to Windows 11.

Compose a message now, but schedule it to be sent later.

Summary. Windows 10, versions 2004, 20H2, 21H1, and 21H2 share a common core operating system with an identical set of system files. Therefore, the new features in Windows 10, version 21H2 are included in the latest monthly quality update for Windows 10, version 2004, 20H2, and 21H1, but are in an inactive and dormant state.

How to recall and/or replace an email message you sent by using Microsoft 365 and your built-in Exchange Server account.

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.