Windows 8.1 Update and Windows RT 8.1 Update (also known as KB 2919355) include improvements that make your favorite apps and settings easier to find and use, provide more familiar mouse and keyboard options, and update security and performance.Here’s what you need to know about installing this important update. Check to see if it’s already installed

Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.

登录到 Xbox 应用，然后选择“好友”选项卡。 在搜索框中输入玩家代号，然后按 Enter。请务必细心注意玩家代号的拼写和空格。 右键单击要添加的搜索结果中的配置文件，然后选择“打开配置文件”。选择配置文件屏幕中的“添加好友”按钮。在对方将你加入他们的好友列表之前，你将显示为关注 ...

Переход с Windows 10 на Windows 11 будет бесплатным. Однако из-за размера загрузки поставщик услуг Интернета может взимать плату за загрузки, выполняемые по лимитным подключениям.

Creating an online account usually involves entering your information into a form containing multiple fields, such as name, email address, date of birth, password, and more.

在某些情况下，如果没有 Internet 连接，可能无法登录。 通过在设备的锁屏界面上选择 “网络 ”，请确保已连接到 Internet。 如果在连接到 WLAN 时遇到问题或信号较弱，请尝试使用以太网电缆将设备直接连接到路由器或调制解调器。

Microsoft Teams (免费) 入门。 浏览选项、了解新增功能、浏览帮助主题等。

重要事项 更改 Microsoft 帐户密码略不同于重置忘记的密码，因此，本页不包含重置帐户密码的步骤。

Surface 会根据其工作负载调整风扇速度，当设备正在执行许多任务或大量利用单个任务时，设备可能会变暖。 发生这种情况时，风扇可能会更频繁地打开或更快速地旋转，以保持设备冷却和 CPU 性能最佳。

Select Payment & billing, and then select Payment options.; Under Payment methods, select the payment method you tried to use to make the purchase.. For credit cards, debit cards, and direct debit, do the following: Select View or edit card and adjust the billing address as needed.; Select Save when finished.; For PayPal, do the following: If the email address is incorrect for your PayPal ...