使用双重验证时，Microsoft Authenticator 应用可帮助你登录帐户。 在 Android 设备上安装 Authenticator Google Play 商店在中国不可用，因此只能从以下商店下载Microsoft Authenticator：

Learn more. Fix problems with apps from Microsoft Store. Manage your purchases from the Microsoft Store. Need more help? Contact Support. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help.If you still need help, select Contact Support to be routed to the best support option.

还可以从 iPhone® 上的 App Store 下载连接至 Windows ，但这不是必需的。 iPhone® 和电脑之间的此链接使你能够即时访问你喜欢的许多内容。 轻松阅读和回复短信、拨打和接听电话，以及直接在电脑上管理 iPhone® 通知。 要求 手机连接 需要满足以下条件：

在 https://teams.microsoft.com 查找 Web 上的 Teams。 若要使用 Teams，需要一个具有商业或企业 Microsoft 365 许可证计划的 Microsoft 365 帐户。 有关详细信息，请参阅如何访问 Microsoft Teams。 有关 Web 上 Teams 支持的浏览器的信息，请参阅 Microsoft Teams 的 Web 客户端。

Introducing Microsoft Phone Link Our evolution of the former Your Phone app brings a new name to the user experience. With the new Phone Link on your Windows PC and the new Link to Windows app on your Android device, accessing your mobile apps and content has never been easier!

If you are planning to use Teams free or if you were a guest in an org, you can connect and collaborate by downloading and installing another version of Microsoft Teams (work or school) and signing in with your Microsoft account or the guest account where the invite was sent to.

Warning: Turning off Memory Integrity on a Secured-core PC takes the device out of a Secured-core state.If you choose to continue using your device without addressing the driver problem, you might discover that the functionality the driver supports does not work any longer, which could have consequences ranging from negligible to severe.

If you bought a stand-alone version of an Office app, for example Visio or Word, in most cases you install this app in the same way you install the Microsoft 365 or Office suite, by signing in to www.office.com with your Microsoft account, or work or school account and selecting Install for your stand-alone product.

Open the app, go to the app’s top-level menu, and then select Send feedback. After that, contact Support or go to the Microsoft Authenticator app forum and explain the problem you're seeing and the steps you tried. If you tried all of these steps and are still having issues, we recommend sending your log files for diagnostics.

Now, you can use apps to share files and photos right from File Explorer. Select the files you want to share, go to the Share tab, select the Share button, and then choose an app. For more info on sharing options, see Share files in File Explorer.