All articles tagged with #hyper v
Microsoft released an emergency out-of-band update to fix bugs introduced by its record September Patch Tuesday, addressing Remote Desktop, USB audio, and Hyper-V issues across Windows 11 versions 26H1, 25H2, and 24H2 and related Windows Server LTSC/2022/2025 releases; Microsoft notes that out-of-band fixes have become more common this year.
QEMU 10.2 introduces the MSHV accelerator to run Hyper-V guest VMs without nested virtualization, showcased at FOSDEM 2026; Microsoft and Azure engineers plan broader CPU model support, device passthrough, live migration, and ARM expansion for Hyper-V capabilities in QEMU.
Microsoft's March security update addresses 61 vulnerabilities, including critical flaws in Windows Hyper-V that could lead to denial-of-service and remote code execution. The update also fixes issues in Azure Kubernetes Service, Windows Composite Image File System, and Authenticator. Other vendors have also released security updates to address vulnerabilities in their software and systems.
Customer reports indicate that the October Patch Tuesday updates for Windows Server are causing virtual machines (VMs) on Hyper-V hosts to fail to start, displaying "failed to start" errors. The issue seems to be triggered by specific updates, and affected administrators have found that uninstalling these updates resolves the problem. Microsoft has not yet acknowledged the issue, but previous incidents with Hyper-V VMs and VMware ESXi have prompted emergency updates in the past.
Upgrading from Windows 11 Home to Pro can be beneficial for power users, as it unlocks additional features such as BitLocker, Hyper-V, and more RAM support. The upgrade can be purchased via a code or through the Microsoft Store app. Windows 11 Pro also allows for tighter control over the operating system and the ability to serve as a host for remote access.