了解如何将内容从一台设备屏幕镜像或投影到另一台设备。 注意: 无线显示应用在运行 Windows 11 版本 22H2 及更高版本的设备上可用。如果运行的是早期版本的 Windows，请在任务栏的搜索框中输入 “连接”，然后在结果列表中选择“连接”，从而启动 “连接” 应用。

Microsoft account help and support. Get help with signing in, locked or compromised accounts, linked accounts, closing, reopening, and updating your security info and account profile.

What is a Microsoft account used for? You need a Microsoft account to sign in to your Windows pc, Xbox console, or any of Microsoft’s products and services, including Office, Outlook.com, OneDrive, Xbox Live, Microsoft 365, Family Safety, Skype, Bing, Microsoft Store and MSN.

Notes: You don't need a smartphone to receive a security code. Text messages may come from either "MSFT", a short number, or a mobile number.If you have requested a security code, you can trust the message that arrives.

如果在 BitLocker 无法与可能的攻击区分开来的硬件、固件或软件中进行更改，也可能会发生这种情况。 在这些情况下，BitLocker 可能需要更高的恢复密钥安全性，即使该用户是设备的授权所有者也是如此。 这是为了确保尝试解锁数据的人员确实已获得授权。

Pronto para instalar? Antes de começar, certifique-se de que o seu PC ou Mac cumpre os requisitos de sistema.. Se já resgatou uma chave de produto, está simplesmente a reinstalar as aplicações ou sabe que tem uma licença atribuída através do trabalho ou da escola, pode avançar e aceder à secção iniciar sessão para transferir e instalar o Microsoft 365 ou o Office.

Step 2: Back up your folders. Windows Backup is an easy, single stop for all of your backup needs. Your free Microsoft account comes with 5 GB of OneDrive cloud storage (and more storage is available if you need it), and backing up your folders syncs the folders you specify to your OneDrive account, making them instantly accessible on all computers that you use with this Microsoft account.

If you're running Windows 8.1 or earlier, or if your PC doesn't meet the minimum system requirements to run Windows 11, consider moving to a new Windows 11 device. Find a PC that meets your needs. Set up your Microsoft account to transfer files and favorites. One account connects your device across Microsoft apps and services like Microsoft 365, OneDrive, Edge, and Microsoft Store.

如果您使用了不同的帐户登录，从此帐户注销然后使用正确的 Microsoft 帐户重新登录。 注意: 如果想通过工作或学校帐户安装 Microsoft 365 并已使用 工作或学校帐户 登录，则不需按照以下说明操作。

Next to the password you want to change, select More actions , and then select Edit.