What are IMAP and POP? - Microsoft Support
Learn the difference between IMAP and POP, and when to use each one.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Microsoft 365 admin, Outlook.com, Outlook Web App for Office 365 operated by 21Vianet, New Outlook for Windows, Outlook Mail for Windows 10
Troubleshoot Outlook for Windows issues - Microsoft Support
Important: Steps may be different between new and classic Outlook for Windows. To determine which version of Outlook you're using, look for File on the ribbon.If there's no File option, follow the steps under the New Outlook tab. If the File option appears, select the tab for Classic Outlook.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013, New Outlook for Windows
Configure Windows Hello - Microsoft Support
Learn how to sign into your PC with Windows Hello using a PIN, facial recognition, or fingerprint.
Use the System File Checker tool to repair missing or corrupted system ...
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.
Encrypt email messages - Microsoft Support
Add additional privacy protection to email messages with encryption.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Fix problems with apps from Microsoft Store
Get troubleshooting tips to fix problems with apps from Microsoft Store.
在 Microsoft Edge 中保存或清除密码 - Microsoft 支持
在浏览 Web 时，Microsoft Edge 可以轻松保存密码。 在桌面或移动设备上的 Edge 浏览器中输入新密码时，Microsoft Edge 会询问你是否要记住用户名和密码。
Recover lost or deleted files - Microsoft Support
Learn how to recover files that have been lost, deleted, or accidentally changed.
Calendar sharing in Microsoft 365 - Microsoft Support
Learn about how calendar sharing works in Office 365.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Outlook.com, Calendar for Windows 10, New Outlook for Windows, Outlook for iOS, Outlook on the web for Exchange Server 2016
新しいMicrosoft Edgeに更新する - Microsoft サポート
デバイスに対する管理者特権がない場合はどうなりますか? 新しい Microsoft Edge に完全にアップグレードするには、管理者アカウントを使用してデバイスにサインインする必要があります。