Enable Office 365 Two Factor Authentication

https://www.microsoft.com/zh-cn/account/authenticator

https://support.microsoft.com/zh-cn/office/%E5%B0%86-microsoft-%E8%BA%AB%E4%BB%BD%E9%AA%8C%E8%AF%81%E4%B8%8E-microsoft-365-%E9%85%8D%E5%90%88%E4%BD%BF%E7%94%A8-1412611f-ad8d-43ab-807c-7965e5155411#ID0EAAEAAA=_%E6%AD%A5%E9%AA%A4_1

MiUI OS install GMS

Download and install 'Microsoft Authenticator' on your mobile phone at https://www.microsoft.com/zh-cn/account/authenticator

Login your Office 365

click [View Account] on top-right

choose [Security Info] on the left menu bar

there is a list of your authentication methods

check if 'Microsoft Authenticator' is listed, if not, click [Add method]

choose 'Authenticator app'

click next a few times until you see the QR code

scan with the microsoft authenitcator app and then click next

it will then ask you to 'approve' it on your mobile phone

check your mobile phone and approve it

there should be 'microsoft authenticator' in the list

Click the [change] button to change the 'default sign-in method' to 'Microsoft authenticator'

Then try logout and login again, after you enter the password, it should ask you to approve it on your mobile phone

从具有GMS（Google mobile service）的手机或者iOS应用商店中下载microsoft authenitcator app并使用“工作或学校账户”选项扫描QR code。

从系统应用商店或“豌豆荚”App下载GMS安装器App如：“谷歌安装器”、“谷歌框架安装器”等App。

安装GMS并重新启动手机。

打开VPN并确保全局的App可访问外网。

打开Google play并下载microsoft authenitcator app即可。

进入“设置”-“应用程序管理”找到GMS相关软件并清除缓存、数据等。

重启手机并打开VPN确保全局的App可访问外网。

打开Google play并下载microsoft authenitcator app。