The Hyper-V host must have a valid, activated copy of Windows Server 2025 with the AVMA key installed (see below). Windows Server 2025 AVMA Keys Microsoft provides public, known AVMA keys. These do not activate standalone installations — they only work when the VM is running on a properly licensed 2025 Hyper-V host.
slmgr /ipk <AVMA-Guest-Key> Once the key is installed, trigger activation: windows server 2025 avma
✅ Hyper-V on Windows Server 2025 Datacenter ✅ Isolated/air-gapped networks ✅ Automated VM provisioning (DevOps, VMM, SCVMM) The Hyper-V host must have a valid, activated