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Sign in, sign up, sign out and add a new account in Microsoft Teams ...
Learn how to sign in and out of Microsoft Teams (free) with a Microsoft account, which you already have if you use Skype, OneDrive, Outlook.com, or Xbox Live.
Applies To: Microsoft Teams, Microsoft Teams personal
Office Help & Training
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为升级 Windows 11 准备就绪 - Microsoft 支持
安装 Windows 11. 在针对你的特定电脑测试和验证 Windows 11 升级后,Windows 更新将指示它已准备好安装。 若要检查 Windows 11 是否已为你的设备准备就绪,请转到“开始” “设置” >“更新和安全性” >“Windows 更新” ,然后选择“检查更新”。 如果升级适用于你的设备,并且想要继续,请下载并安装它。
KB4457951: Windows guidance to protect against speculative execution ...
Summary. Microsoft is aware of new variants of the class of attack known as speculative execution side-channel vulnerabilities. The variants are named L1 Terminal Fault (L1TF) and Microarchitectural Data Sampling (MDS).An attacker who can successfully exploit L1TF or MDS may be able to read privileged data across trust boundaries.
Office Help & Training
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Recover lost files on Windows 10 - Microsoft Support
If you can’t locate a lost file from your backup, then you can use Windows File Recovery, which is a command line app available from the Microsoft Store.Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin.
Office Help & Training
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Office Help & Training
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Find out which version of Microsoft Edge you have
Here's how: Open the new Microsoft Edge , select Settings and more at the top of the window, and then select Settings .
启用自动应用更新 - Microsoft 支持
有时,应用发布者会更新其应用以添加新的功能并修复问题。 Windows 上的 Microsoft Store 可以自动安装应用更新。