Unable to generate keys to perpetual software

The 715 error you're seeing is apparently a known global issue affecting several Partners and customers. I've had the same issue which has since been resolved after raising it with support via Partner Center.

To resolve it, you'll need to adjust some settings related to your browser, network, or device. These settings are necessary to allow Microsoft's identity verification service to run properly, ensuring accounts remain secure and compliant with regulations. In some cases, VPNs and browser security settings (designed to protect you) can unintentionally block this process.

Here are some steps you can try:

• Clear your browser cache.
• Turn off tracking prevention in your browser or add the Microsoft site to your exception/safe list.
•  Temporarily disable any VPN service you may be using.
• Connect directly from your local device, instead of through a virtual machine (VM).

If the issue persists after trying these steps, it might be worth consulting with your IT team. Sometimes, network-level settings need to be adjusted — such as safelisting the site — and your IT administrator would need to make those changes.