To prevent one key from being used on 100 machines (unless intended):
If you have already purchased software and simply lost your key, you don't need risky third-party sites. Use these legitimate methods instead: Find your Windows product key - Microsoft Support
To prevent one key from being used on 100 machines (unless intended):
If you have already purchased software and simply lost your key, you don't need risky third-party sites. Use these legitimate methods instead: Find your Windows product key - Microsoft Support