Learn how to contact Microsoft Store support to get help for your payment and billing issue.

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

Microsoft Support offers assistance for Microsoft products, including how-to articles, videos, and training for various software and devices.

忘れた場合や紛失した場合に Windows パスワードを変更またはリセットする方法について説明します。

Learn how to use and install mobile apps on your Windows 11 PC with the Windows Subsystem for Android™.

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.

Learn how to reset or change your Microsoft account password. Get help with a forgotten Microsoft account password.

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product.

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