Software & Apps Windows How to Find Your Windows 7 Product Key Use free software to extract your Windows 7 key from the Registry by Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated on August 10, 2020 Windows The Ultimate Laptop Buying Guide Tweet Share Email What to Know You'll need a free product key-finder program that supports Windows 7, then just follow the easy instructions to get the number.The Windows 7 product key is sometimes called the Windows 7 serial key, activation key, or CD key.A copy of your Windows 7 key is also stored in the registry. It's encrypted but a special program will extract it for you. This article explains how to locate a Win 7 activation (product) key. The manual techniques used to locate the product key for older versions of Windows won't work in Windows 7 (they only locate the product ID, which is different). Our Windows Product Keys FAQ explains product keys and how they work in Windows. How to Find Your Windows 7 Product Key Follow the steps below to locate your Windows 7 product key code: Choose a free product key-finder program from this list that supports Windows 7. Any product key finder that locates Windows 7 product keys will locate the product keys for any version of Windows 7: Ultimate, Enterprise, Professional, Home Premium, Home Basic, and Starter. Download and run the key-finder program. Follow any instructions provided by the software. The numbers and letters displayed by the program represent the Windows 7 product key. The product key should be formatted like this: xxxxx-xxxxx-xxxxx-xxxxx-xxxxx To be clear, that's five sets of five letters and numbers. Write this key code down exactly as the program displays it to you. Most keyfinder tools let you export the key to a text file or copy it to the clipboard. If even one character is written down incorrectly, the installation of Windows 7 that you attempt with this product key will fail. Reinstall Windows 7 using that product key. A Few More Options If you need to install the Windows 7 operating system but you still can't find your Windows 7 product key, even with a product key finder, you have two choices: Request a replacement product key from Microsoft, which should cost you around $10 USD. This doesn't always work out, but it's worth a shot.Purchase a brand new copy of Windows 7 from Newegg or some other retailer. As of January 2020, Microsoft is no longer supporting Windows 7. We recommend upgrading to Windows 10 to continue receiving security updates and technical support.