Learn how to improve Windows PC performance if your device is running slowly.

This troubleshooter assists customers whose machines are not yet updated to the latest release, Windows 10 Version 1607. This update will initially be released only to a small set of targeted customers. This set will expand over time. Windows users can start the assistant from this article.

Learn how to upgrade from Windows 10 Home to Windows 10 Pro or Windows 11 Home to Windows 11 Pro, including how to use a valid product key or the Microsoft Store.

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

Check the Xbox services, games, and apps for any service outages.

Outlook on the webは、組織で使用される Outlook の Web ベースのバージョンです。この Web ベースのバージョンの Outlook にアクセスするには、職場または学校アカウントでサインインする必要があります。

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.

Do you need some help installing Quick Assist? For the best experience, download and install the new version of the Quick Assist app from Microsoft Store. If you have problems installing Quick Assist, here are some steps to try to get it installed and working properly.

可通过不同的方式删除应用和程序，因此如果找不到要查找的应用和程序，可以尝试另一个位置。 请注意，某些应用和程序内置于 Windows 中，无法卸载。

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