Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.

Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

When you back up your files, apps, and settings in the cloud using your Microsoft account, you get 5 GB of free cloud storage and other benefits that protect your files with the latest security and make everyday tasks easier.

Here's how to change the size of text, images, and apps in Windows. To change your display in Windows, select Start > Settings > Ease of Access > Display.To make only the text on your screen larger, adjust the slider under Make text bigger.To make everything larger, including images and apps, choose an option from the drop-down menu under Make everything bigger.

Windows 10 and 11 contain a large set of emojis. To insert one: Put your cursor where you want the emoji.

Learn how to troubleshoot and fix problems setting up your email in Outlook.

Discover the latest features in Office 2021, including new ways to create content, manage data, and communicate effectively.

Summary. Microsoft Update Health Tools is offered to devices through Windows Update as update KB4023057. This update is applicable for both Windows consumer and commercial devices, with a slightly different purpose and functionality.

Find out how to set up and manage your security info and verification codes for your Microsoft account, and troubleshoot common issues.