Hi.
Please try the following troubleshooting:
- Check if the license key pack ID is valid and not expired.
- Ensure that you have the correct version of the Remote Desktop Licensing Manager installed.
- Check if the Remote Desktop Licensing service is running.
- Ensure that the server is connected to the internet and can communicate with the Microsoft activation servers.
Hope the information is helpful.
Best Regards,
Hania Lian
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