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Find your product key to activate Windows. A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

Your Phone is now Microsoft Phone Link! Learn more about our recent name change for our PC and Android mobile apps.

Learn how to access and manage your Windows sign in options. Use a password, Windows Hello, or a security key to unlock your device.

Learn how to install a scanner and use it to scan pictures and documents in Windows 10.

With online threats getting more advanced day by day, it is important to prioritize the safety of your web browsing. Microsoft Edge offers several features and practices that can enhance your online security and protect your personal information.

Learn how to troubleshoot when the camera is not working in Windows or you see errors 0xA00F4244 or 0x200F4244.

了解如何安装 Windows 11，包括在“设置”中访问 Windows 更新页的建议选项。

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

Find answers to top questions about upgrading to Windows 11, from the minimum hardware requirements to where to find the upgrade.