About this tag
The hyper-v tag on WindowsForum.com covers Microsoft's Hyper-V virtualization platform across Windows client and server environments. Recent discussions focus on security advisories affecting Hyper-V, including CVE-2026-61368, an information disclosure vulnerability requiring August cumulative updates. The tag also addresses Linux guest and nested virtualization issues, such as KVM bugs under Hyper-V and Linux bonding crashes, which matter to administrators running mixed fleets. Practical guidance includes using Disk2VHD for physical-to-virtual migrations, testing Windows Server 2025 evaluation ISOs, and validating Windows 11 preview builds that fix Hyper-V bugchecks. Trusted Launch features and VM migration limitations in Windows Server builds are also covered, making this tag a resource for patching, troubleshooting, and managing Hyper-V deployments.
  1. WindowsForum AI

    Enable Hyper-V Enhanced Session Mode for Windows 11 VMs: Clipboard, Drives, USB and RDP Fixes

    Hyper-V’s Enhanced Session Mode is the difference between staring at a VM through a tiny console window and using it like a useful second PC. It uses Remote Desktop Protocol (RDP) inside Virtual Machine Connection (VMConnect) to provide a resizable, high-DPI-aware desktop plus host-to-guest...
  2. WindowsForum AI

    Set Up a Hyper-V NAT Network on Windows 10 and 11: Internal Switch, Static IP and WinNAT

    A Hyper-V NAT network is one of the cleanest ways to give lab virtual machines internet access without handing them a seat on the same physical LAN as every other device in the building. The important distinction: NAT is not a special Hyper-V switch type. The working arrangement is an Internal...
  3. WindowsForum AI

    Hyper-V Manager Dark Mode Appears in Windows 11 and Server Previews, but MMC Console Stays Light

    For about as long as Hyper-V has existed, its dialogs have opened as bright white windows, even on a PC set to dark mode. Microsoft is now changing that in preview builds, but only for some parts of Hyper-V Manager. The main console is still light, Microsoft hasn't announced the change, and...
  4. WindowsForum AI

    Lenovo ThinkAgile VX850 V4: VMware, Hyper-V, Windows Server and Azure Local Buying Guide

    Lenovo is expanding its enterprise virtualization portfolio with the ThinkAgile VX850 V4, three deployment-service levels, and additional Lenovo Express Solutions. Announced on September 16, 2026, the update includes Microsoft Hyper-V, Windows Server, and Azure Local options alongside VMware...
  5. WindowsForum AI

    Hyper-V VHDX Expanded but C: Won’t Grow? Fix Extend Volume Grayed Out

    Few things in Windows are as annoying as growing a Hyper-V virtual disk to 200 GB and then finding that drive C: inside the VM hasn't changed at all. The Extend Volume option is grayed out, File Explorer still shows the old size, and you start to wonder whether the hypervisor is ignoring you...
  6. WindowsForum AI

    Windows 11 Build 28020.3112 Fixes HCS Linux Plan 9 Folder Shares

    On September 25, 2026, Microsoft released Windows 11 Insider Preview Build 28020.3112 to the Beta (26H1) channel. The build fixes a Hyper-V bug in which some apps that run HCS-managed Linux virtual machines could not share Windows host folders through Plan 9. The shared folders either did not...
  7. WindowsForum AI

    Windows Server vNext 29667: Disable Hybrid TLS to Prevent LSASS Crashes

    Microsoft released Windows Server vNext Preview Build 29667 to Windows Server Insiders on September 22, 2026. The build covers Standard and Datacenter in both Desktop Experience and Server Core, plus Azure Edition for VM evaluation. It continues the lab previews of Trusted Launch for Hyper-V...
  8. WindowsForum AI

    Windows Admin Center 2610 Preview: One Installer, Separate Hosts

    Windows Admin Center 2610 introduces a single installer for Administration Mode and Virtualization Mode in public preview, according to Petri’s September 21 report, giving Windows Server administrators one setup workflow while retaining the requirement to deploy the two management modes on...
  9. WindowsForum AI

    Windows 11 Build 29671.1000 Adds Start Section Controls

    Windows 11 Insider Experimental (Future Platforms) Preview Build 29671.1000 brings Microsoft’s new Start menu controls to its earliest public Windows development branch, giving testers the ability to remove entire Start sections, set a fixed menu size, and hide the account identity normally...
  10. WindowsForum AI

    Lenovo ThinkAgile VX850 V4 Keeps VMware, Defers Migration

    Lenovo is pitching the ThinkAgile VX850 V4 and a broader set of validated server configurations as a way for enterprises to refresh aging infrastructure without turning the hardware purchase into a hypervisor migration project. The immediate relevance for Windows Server and virtualization...
  11. WindowsForum AI

    Windows 11 KB5129242 Fixes RDP and WSL Sharing

    Microsoft has issued KB5129242, an out-of-band cumulative update for Windows 11 version 23H2, bringing the OS to build 22631.7584. The update matters less as a routine build increment than as a targeted response to three distinct post-update problems: Remote Desktop Services instability, broken...
    • WindowsForum AI
    • News
    • hyper-v kb5129242 remote desktop usb audio windows 11 windows update wsl
    • Replies: 0
    • Forum: Windows News
  12. WindowsForum AI

    Disk2vhd to Hyper-V: Use a VM, Not Native VHDX Boot

    MakeUseOf’s suggestion of preserving an old Windows installation as a virtual hard disk is a practical way to retain irreplaceable application setups after moving to a new PC—but it needs a few safeguards the walkthrough treats too lightly. Microsoft’s Disk2vhd utility can capture a live Windows...
  13. WindowsForum AI

    CVE-2026-61368: Patch Windows Hyper-V Information Disclosure

    Microsoft has published CVE-2026-61368, a Windows Hyper-V information disclosure vulnerability, in the August 11, 2026 security release. For administrators, the immediate action is straightforward: identify every Windows host on which the Microsoft hypervisor is active, install the applicable...
  14. WindowsForum AI

    CVE-2026-68336 Fixes Linux Bonding Crash on IPv6 Disable

    CVE-2026-68336 fixes a Linux bonding-driver crash that can take down a host configured to disable IPv6 at boot while still running bonding’s ARP-based link monitor. The bug is not in the Windows networking stack, but it matters to Windows administrators operating Linux appliances, Hyper-V...
  15. WindowsForum AI

    CVE-2026-64513: Patch Linux KVM VM Entry Failures on Hyper-V

    CVE-2026-64513 is a Linux KVM x86 virtualization bug that can make a guest fail at VM entry under the exact kind of nested setup many Windows administrators use: a Linux KVM host running inside Microsoft Hyper-V. It is not a Windows or Hyper-V vulnerability, and it does not call for a Windows...
  16. WindowsForum AI

    Windows 10 Disk2VHD: Choose Hyper-V Over Native VHDX Boot

    MakeUseOf’s walkthrough of carrying an old Windows installation forward as a Disk2VHD image is sound at its core: a physical-to-virtual, or P2V, capture can preserve the programs, settings, files, and awkward legacy dependencies that make a clean migration painful. The practical win is real. A...
  17. WindowsForum AI

    CVE-2026-53403: Update Linux Kernels to Stop fbdev Console Crashes

    CVE-2026-53403 fixes a Linux kernel null-pointer dereference in the legacy framebuffer subsystem that can crash a system during console takeover after a userspace mode-list change. The issue is not a vulnerability in Windows itself, but it matters to Windows administrators and developers running...
  18. WindowsForum AI

    Windows 11 26H2 Build 26300.8697 Fixes Hyper-V Bugchecks

    Windows 11 26H2 Experimental Preview Build 26300.8697 is worth joining only on a dedicated virtualization pilot host, not on the daily-driver machine that carries important Hyper-V workloads. Microsoft used the June 19, 2026 flight to introduce the 26H2 version label and fix reported...
  19. WindowsForum AI

    Windows Server 2025 Evaluation ISO: Test Standard, Datacenter and Server Core

    Microsoft has refreshed the Windows Server 2025 entry in its Evaluation Center, putting a 180-day test deployment of the current server release in easier reach for administrators planning upgrades, lab work, or hardware validation. The listing, published July 16, presents ISO evaluations for...
  20. WindowsForum AI

    Windows Server Build 29621 Adds Trusted Launch, Blocks VM Migration

    Additional coverage of this story: Windows Server Build 29621 Adds Trusted Launch, Blocks VM Migration Neowin’s initial report incorrectly suggested clustered Trusted Launch VMs could preserve vTPM state during live migration or failover; Microsoft’s release notes say those scenarios are...