Use the Windows Settings app to change your default browser.

Instead of fix-it tools, Windows 10 uses troubleshooters to help you solve problems with your PC. To run a troubleshooter: Select Start > Settings > Update & Security > Troubleshoot > Additional troubleshooters, or select the Find troubleshooters shortcut at the end of this topic, and then select Additional troubleshooters.

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

2. Fill out the form using a recognized device and location. If possible, complete the form using a device you previously used to sign into your account and at a location where you commonly use that device and that we'll recognize, such as your home or office.

取消锁定受保护工作表中的区域，以便用户编辑. 要为特定用户授予权限以编辑受保护工作表中的区域，您的计算机必须运行 Microsoft Windows XP 或更高版本，且计算机必须在某个域中。

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

Training: Watch and learn how to use PowerPoint in Windows. Explore PowerPoint training guides, articles, and how-to videos.

Connect with friends, family, and coworkers in Teams. Stay organized and connected with friends, family, and coworkers all from one app. Get started

检查你的版本. DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。

On your console, get Xbox Game Pass Ultimate in Store > Subscriptions.Online, go to Xbox Game Pass. Your purchase of Game Pass Ultimate will automatically convert any outstanding time on your subscriptions to Xbox Game Pass or EA Play into time for Xbox Game Pass Ultimate at the current conversion ratio, up to a maximum of 36 months.