Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Find out how to stop your screen from flickering after the upgrade to Windows 10.

Learn why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

Discusses the release of the Malicious Software Removal Tool (MSRT) to help remove specific prevalent malicious software from Windows-based computers.

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

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

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。

An overview of location permissions and your privacy in the Microsoft Edge web browser.

Experience Microsoft Copilot on windows devices using the Copilot app! The Copilot app helps you get answers and inspiration from across the web, supports creativity and collaboration, and helps you focus on the task at hand.

Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.