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

Deinstallieren oder entfernen Sie Apps und Programme in der Einstellungs-App.

Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.

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

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

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。

In Windows 11, apps don't automatically get added to your desktop. Learn how to pin apps to your desktop or taskbar in Windows 11 or Windows 10.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Microsoft's products and services work best if you use the same language and region across all your devices, and in all of your app and Store settings.