Learn what you can do if you're not receiving account aign-in verification codes.

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。

An upgrade differs from an update in that it moves your PC from a previous version of Windows—such as Windows 10—to Windows 11. This FAQ is intended to answer questions about upgrading to Windows 11.

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

Get help with using mail, calendar, and contacts on Outlook.com.

Use System Restore. Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually.

Learn how to connect your Windows PC to external monitors and adjust the display settings.

Help to decide whether you should install the 32-bit Office version or the 64-bit Office version. Which version is right for you depends on how you plan to use Office. Find out about choosing between 32-bit Office and 64-bit Office.

How to send automatic out-of-office replies from Outlook (depending on the type of email account you have).

Find answers to frequently asked questions about Office 2021 and Office LTSC for Windows and Mac on the official support page.