Defragment your Windows 10 PC. Optimizing your drives can help your PC run smoother and boot up faster.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Learn how to manage and set device screen time limits on Windows, Xbox, and mobile devices connected through the Microsoft Family Safety app.

Open Microsoft Edge, select Settings and more (...), and then select Settings. Look for your version under About Microsoft Edge.

Get troubleshooting advice and see a list of options available for starting Windows in diagnostic modes such as safe mode.

Learn how to free up space for Windows update including deleting nonessential files, using an external hard drive, and updating your hard drive.

更新 Surface 设备和 Windows。 下载最新的驱动程序和固件更新，以使 Surface 设备保持最佳性能。

Learn about HDR capabilities in Windows 11 to bring a wider range of colors and details to your display.

Download the latest internet browser recommended by Microsoft from the official support page.

Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.