PC 正常性チェック アプリは、お使いの Windows デバイスの正常性に関する最新の情報を提供して、デバイスのパフォーマンス向上のための対処や、パフォーマンス問題のトラブルシューティングに役立ちます。

How to access and change the privacy settings in Windows 10 and 11.

If the AutoRecover option is turned on, you can automatically save versions of your file while you’re working on it.

Here's how to get the Recycle Bin on your desktop: Select the Start button in the lower-left corner of the taskbar, then Settings.

Find out how to change the color of the Start menu, taskbar, and action center with dark and custom mode personalization settings.

Help to fix install errors for Office, such as "can’t install Office", "something went wrong" or situations where install hangs or activation fails.

Learn how to use Wi-Fi 7 and Wi-Fi 6 and WPA3 in Windows for better wireless coverage and network security.

Windows 10 lets you quickly check your network connection status. And if you're having trouble with your connection, you can run the Network troubleshooter to try and fix it.

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors.

Learn how to retrieve a forgotten username or password for your Office for home or Office for business account.