Hello Igor,
Yes Windows Server 2025 is a supported guest operating system for Hyper-V on Windows Server 2019. Please refer to the following link
Windows Client for IT Pros and Windows Server forums are moving to Microsoft Q&A
We’re transitioning to Microsoft Q&A for a more streamlined experience. Starting February 26th*, new questions can only be posted on* Microsoft Q&A. Existing discussions will remain accessible here.
Beginning March 3rdcustomers looking for support on Answers will be automatically redirected to Microsoft Q&A.
Best regards,
Ian Xue