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

Learn how to reinstall Windows on your PC and how activation works after it's installed.

Install Office 2007. Insert your Office 2007 CD into the drive. If the setup wizard doesn’t start automatically, navigate to the CD drive and click SETUP.EXE.

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

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.

Go to Settings > Apps > Apps & features to change whether you're shown app recommendations when trying to install apps from outside the Store.

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

Learn how to install Windows 7 Service Pack 1 (SP1). Includes info about how to get the download, requirements, and more.

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

Windows Security is pre-installed on Windows 10 and ready for you to use at any time.