Hello,
The Microsoft article "Troubleshoot an RDP general error to a Windows VM in Azure - Azure | Microsoft Learn" describes the exact same error. If you have access to the Azure portal, you may want to follow the troubleshooting steps provided.
Meanwhile, we apologize as there are currently no dedicated engineers available for Azure. We encourage you to seek assistance with your inquiries by reaching out on Azure - Microsoft Q&A..
Thank you for your understanding and collaboration.
Regards,
Karlie