Using the incorrect key is likely to fix this error. It does so when the license is not signed correctly, or the license validity interval already expired. The most straightforward answer is that error code 0xC004E003 occurs because the license evaluation for your product key failed. This error code means that your license evaluation failed and that your Win 7 wasn’t activated. You key in the code, and then the “004e003 error” notification pops up. You need to activate it, and that’s where the catch also lies: you’ll need a valid product key to bind your licensed Windows 7 to your computer to prevent its installation on multiple devices. Activate Windows 7 through your Phone –įor starters, installing a Windows 7 on your computer isn’t enough to get the most out of it. (Top 7) Ways to Fix Windows 7 Activation Error Code 0xc004e003.What is Windows 7 Error Code 0xc004e003?.