If you own a legitimate product key but are running into errors during the activation process, try the following troubleshooting steps: "Invalid Product Key" Error
If you lack an internet connection, you can choose the option to generate a request file for manual processing. Important Considerations Where to find Windows Server product key? Windowfx Product Key
I can provide specific troubleshooting steps or licensing terms based on your needs. Share public link If you own a legitimate product key but
: A successful activation will be confirmed with a dialog box. A single license can generally be used on up to five devices Troubleshooting Activation Issues Windowfx Product Key