To install Authenticator on your iOS device. Scan the QR code. or download and install Authenticator from the Apple app store. Get the app

If you're moving from a Windows 7 or Windows 8.1 PC to a new Windows device, you'll find that the best way to get apps and games is through Microsoft Store.

If the self-help answers don't resolve your issue, try a different search, or scroll to the bottom of the Help pane and, under Still need help?, select Yes.

To change your screen resolution, use the drop-down menu next to Display resolution.. Note: You should use the Recommended resolution. If you change the resolution, content might appear blurry or pixelated.

Notes: If you know your password, but just want to change it, go to account.microsoft.com Security tab, and select Change my password. If you know your username and password but they have stopped working, read My username and password have stopped working.

若要在 Outlook.com 中获取支持，请单击此处或选择菜单栏上的帮助，然后输入查询。 如果自助服务无法解决问题，请向下滚动到“仍需要帮助？”，然后选择“是”。 若要在 Outlook.com 中联系我们，需要登录。

The Phone Link supports messages sent by Short Message Service (SMS). It also supports Multimedia Messaging Service (MMS) messaging. You can still send your favorite photos and GIFs from your PC. RCS messaging is also available for select Samsung devices. Learn more How many messages can I see?

但如果需要测试多个条件，例如我们假设所有条件都需要为 True 或 False (AND)，或只有一个条件需要为 True 或 False (OR)，或者如果想要检查某个条件是否不 (NOT) 符合你的条件，这时该怎么做呢？这三个函数均可以单独使用，但它们更常见于与 IF 函数成对使用。

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery.. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app: