Outlook での電子メール メッセージのセキュリティ保護と保護について説明します | Microsoft Support
暗号化やその他のセキュリティ設定を使用して、Outlook から送信されたメッセージを保護する方法について説明します。
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2024, Outlook 2024 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Outlook 2016 for Mac, Outlook Web App for Office 365 Small Business, Outlook.com, Outlook for Mac 2011, New Outlook for Windows, Outlook for Android, Outlook for iOS, Outlook Web App
Digital signatures and certificates | Microsoft Support
Tell me more about digital signatures and certificates. Show me how to get a digital signature from a certificate How would I learn about signing certificates?
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Excel 2024, PowerPoint 2024, Access 2024, Excel 2021, Word 2021, PowerPoint 2021, Access 2021, Visio Professional 2021, Visio Standard 2021, Excel 2019, Word 2019, PowerPoint 2019, Access 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, PowerPoint 2016, Access 2016, Visio Professional 2016, Visio Standard 2016
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Xbox Support
Xbox Support offers help for Xbox, Game Pass, and billing questions. Get advice and customer service in the Xbox Support community.
Manage Xbox online safety and privacy settings | Xbox Support
Learn how to manage the online safety and privacy settings on the Xbox console for you and every member of your family group.
2026 年 3 月 10 日 — KB5079473 (OS ビルド 26200.8037 および 26100.8037)
バージョン 25H2 および 24H2 (KB5079473) Windows 11のこの累積的な更新プログラムには、最新のセキュリティ修正プログラムと、先月のオプションのプレビュー リリースのセキュリティ以外の更新プログラムが含まれています。 セキュリティ更新プログラム、オプションのセキュリティ以外の ...
Learn about securing and protecting email messages in Outlook
Learn how to use encryption and other security settings to protect messages sent from Outlook.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2024, Outlook 2024 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Outlook 2016 for Mac, Outlook Web App for Office 365 Small Business, Outlook.com, Outlook for Mac 2011, New Outlook for Windows, Outlook for Android, Outlook for iOS, Outlook Web App
保護されたファイルを Microsoft Purview Information Protection ビューアーで表示する
Information Protection ビューアーを使用して、Windows、Android、iOS、または Edge で保護されたファイルを表示します。
Applies To:
Microsoft 365
查找你的 Windows 产品密钥 | Microsoft Support
了解如何查找用于激活的 Windows 产品密钥，以及何时改用数字许可证。
Applies To:
Microsoft account dashboard
View protected files with Microsoft Purview Information Protection ...
Windows iOS Android View protected files in Windows using the Microsoft Purview Information Protection viewer If you are trying to open a protected file in Windows and it does not open properly, then you will likely need to use the Microsoft Purview Information Protection viewer for the desktop. The information protection viewer supports the following file types and environments.
Applies To:
Microsoft 365