Windows Update recommends a reinstall after an update installation fails. If an update fails to install because of problems related to system files or components, you might see the following message in the Windows Update page in Settings:. Reinstall your current version of Windows to repair system files and components.

Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features.

Office 2019 (for both Windows and Mac) is a one-time purchase and does not receive feature updates after you purchase it. Office 2019 includes a meaningful subset of features that are found in Microsoft 365, but it's not part of Microsoft 365.

The Advanced Boot Options screen lets you start Windows in advanced troubleshooting modes. You can access the menu by turning on your computer and pressing the F8 key before Windows starts.

Windows の Bluetooth の問題をトラブルシューティングする方法について説明します。 Bluetooth デバイスまたはアクセサリの接続に関する問題を解決します。

If you trust a file, file type, folder, or a process that Windows Security has detected as malicious, you can stop Windows Security from alerting you or blocking the program by adding the file to the exclusions list.

注意: 带 USB Type-C 连接器的电脑具有更高的功率限制。 如果连接器支持 USB 电力传输，则其能够以更大的功率实现更快速充电。. 要更快地充电，你的电脑、充电器和线缆均必须符合行业标准。

If the Encrypt contents to secure data check box is selected, you have to have the certificate that was used to encrypt the file or folder to be able to open it. In this situation, you should obtain the certificate from the person who created or encrypted the file or folder, or have that person decrypt the file or folder.

View calendars side-by-side . You can view side-by-side multiple calendars that you created and also calendars shared by other Outlook users. For example, you can create a separate calendar for your personal appointments and view both your work and personal calendars side-by-side.

注: Windowsでドライバーの更新プログラムを取得する最も安全で安全な方法は、常にWindows Updateです。Windows Updateに問題がある場合は、Update Windowsのリンクのいずれかが最初に役立つかどうかを確認できます。