The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

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.

This page provides phone numbers of Microsoft customer service.

Change your password with your email provider. See the following sections for instructions on changing your email account password for several major email providers.

Learn how to adjust the time and time zone settings on your Windows device with this Microsoft Support guide.

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

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

Learn how to download Microsoft Support and Recovery Assistant to help fix problems with Microsoft 365, Office, or Outlook.

You can repair some apps and programs if they're not running correctly. Note that you won't see repair, change, or modify options for all apps and programs.