Learn how you can free up drive space in Windows. Keep your PC running smoothly and up to date by increasing the disk space.

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Learn how to manage your Microsoft devices. Add, remove, register, or rename a device on your Microsoft account.

Learn how to uninstall Office from a PC using the Control Panel or with the uninstall support tool.

修复 Windows 中的声音或音频问题; 设置 Microsoft 新式无线耳机; 在 Microsoft Teams 中使用 Microsoft 新式无线耳机; 在 Microsoft Teams 中使用 Microsoft 新式 USB-C 耳机

Keeping your login information secure will sometimes require you to change a password. You can easily edit the passwords saved in Microsoft Edge.

Hotmail が Outlook.com になりました。 サインインして、Outlook.com、Hotmail、Live、または MSN メール アカウントにアクセスする方法について説明します。

Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

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. Restoring won’t affect your personal files, but it will remove apps, drivers, and updates installed after the restore point was made. To go back to a restore point:

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