Microsoft has released an emergency update, KB5061906, to address unexpected freezes and restarts affecting Hyper-V virtual machines on Windows Server 2022, particularly Azure confidential VMs. This cumulative out-of-band update resolves a critical issue in the direct send path for guest physical addresses, which could cause these VMs to stop responding or restart. The update is not automatically installed and must be manually downloaded from the Microsoft Update Catalog. Standard Hyper-V deployments are largely unaffected, with rare exceptions. Organizations using Windows Server 2022 with Hyper-V should apply this update if they have not yet deployed the May 2025 Windows security update (KB5058385).