個人用設定を使用して Windows デスクトップの背景 (壁紙) とアクセントカラーを変更する方法について説明します。

You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.

Improve security, evaluate and mitigate the risks of running macros, and see how to enable or disable macros for Microsoft 365.

Learn how to redeem a Microsoft/Xbox gift card or other code on your mobile device, Windows device, or Xbox console.

Learn how to recover deleted items, such as email, contacts, calendar appointments, and tasks in Outlook.

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

Fix-it tools aren’t used in Windows 10. Instead, use a troubleshooter to help solve problems with your PC.

Aprende a crear medios de instalación para instalar o reinstalar Windows 7, Windows 8.1 o Windows 10.

Select Add Account, in the Suggested account dropdown, enter the iCloud account you want to add, and select Continue.

If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.