Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

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 troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

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.

Windows Security is pre-installed on Windows 10 and ready for you to use at any time.

Learn how to find and install digital downloads from Microsoft Store. See instructions to download and install software directly purchased from Microsoft.

If either of the categories above apply to you, use the following procedures to update your browser: Update once. In the browser, go to Settings and more > Help and feedback > About Microsoft Edge (edge://settings/help).. If the About page shows Microsoft Edge is up to date., you don't need to do anything.

Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.

了解如何更改 Windows 中显示器的刷新率，以确定在屏幕上显示运动的平滑程度。

Summary. Microsoft Update Health Tools is offered to devices through Windows Update as update KB4023057. This update is applicable for both Windows consumer and commercial devices, with a slightly different purpose and functionality.