A graphical Hyper-V management tool that exposes the advanced side of Hyper-V through a modern desktop UI, so users don't have to hand-type PowerShell for every knob.

Built on WPF + WPF-UI, targeting net8.0-windows, works on both win-x64 and win-arm64.

• CPU (vCPU) — cores / reserve / limit / weight, host resource protection, nested virtualization, migration compatibility, legacy-system compatibility, VM SMT, PMU / LBR / PEBS / IPT exposure, custom CPU name, CPU pinning, APIC mode, L3 ways & distribution, SLAT page shattering, EPP / frequency cap-floor-target, CCX-per-socket & processors-per-L3, Intel TDX / AMD SEV-SNP confidential-compute.
• Memory — startup / weight / dynamic memory, page size (4K / 2M / 1G), memory encryption (SEV / TDX), mapping mode, access-monitoring granularity, Intel SGX enclaves, NUMA block limits, dynamic-adjust stride, CXL support and GPA pinning.
• Storage — VHD / VHDX / ISO plus offline physical disk/optical pass-through, auto slot allocation across IDE / SCSI controllers, dynamic / fixed / differencing disks with 512n / 512e / 4kn sector formats, on-the-fly ISO packaging via IMAPI2.
• GPU-PV — one-click GPU partitioning, MMIO auto-tuning + write-combining, Windows driver injection (with minimal NVIDIA nvlddmkm service tree) and Linux SSH-driven driver install for Ubuntu 22.04 / 24.04 kernels. Per-partition 3D / Copy / VideoEncode / VideoDecode utilization monitor.
• Console — MsRdpEx-based RDP console over 127.0.0.1, both Basic Session (VMBus, pre-boot) and Enhanced Session (RDP, clipboard / audio / resolution), fullscreen, Ctrl+Alt+Del injection.
• Network — bridged / NAT (with ICS) / no-upstream switch modes, VLAN access / trunk / private (isolated / community / promiscuous), QoS min/max bandwidth, SR-IOV / VMQ / IPsec offload, MAC-spoof / DHCP-guard / router-guard / port-mirroring / storm threshold.
• Boot — reorderable boot entries for Gen1 and UEFI-backed Gen2 (SCSI HDD / DVD / PXE / Windows Boot Manager), persisted through the .vmgs NVRAM image.
• Spacetime (Checkpoints) — tree view of the checkpoint timeline; continuous (standard) and static (production) snapshots; jump / merge / delete; wormhole to mount a snapshot's disk into the live VM without switching.
• PCIe pass-through (DDA) — device inventory with host / dismounted / virtual state, non-Server "ServerNT" identifier switch for supported Windows SKUs, GPU + FLR + physical-display-output compatibility notes baked in.
• Virtual Switch — topology view of external / internal / private switches, remapped as Bridged / NAT / No-Upstream, with Default Switch treated separately.
• USB pass-through — VMBus + USBIP forwarding (via usbipd-win on the host and usbip-win2 inside the guest), no network setup required.
• Hyper-V on ARM — Snapdragon 8cx-and-up support, with MMIO layout tuned for 36-bit physical addressing (Gen3). Known limits: ARM64 guests only, no nested virtualization, no DDA, Gen2 only.

Bilingual UI (English + Simplified Chinese), auto light / dark theme.

Screenshots live under img/ — 01.png is the main window, 02.png–12.png cover the per-feature panels.

Grab the latest build from this repository's Releases page and run HV.exe (or the equivalent binary) directly. No installer, no service.

Requirements:

• Visual Studio 2022 (or later) with the .NET desktop development workload — or a standalone .NET 8 SDK.
• Windows 10 (Build 17134+) / 11 / Server 2019 / 2022 / 2025 as the host.
• Hyper-V role enabled:

  Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V -All

Build:

cd src
dotnet build

Publish a single-file binary for both architectures:

cd src
msbuild ExHyperV.csproj /t:PublishAllArchitectures

Output lands in src/bin/publish-all/{win-x64,win-arm64}/.

The doc/ folder contains focused deep-dives:

• Linux.md — Linux guest GPU-PV bring-up (Ubuntu 22.04 / 24.04, dxgkrnl, CUDA, Mesa/Vulkan).
• cpu-migration-compatibility.md — which CPU features get masked when the "Migration Compatibility" bit is toggled.
• drivermapping.md — how the Windows GPU-PV driver-file symlinking works inside the guest's System32.

Works on Server 2019 / 2022 / 2025 (and on select non-Server SKUs via the built-in ServerNT toggle). Requires IOMMU / VT-d enabled in firmware. Nvidia consumer + workstation cards generally boot and reset cleanly; Intel Arc / AMD RDNA hit Code 43 at driver load in a VM; on-board integrated graphics generally cannot be passed through.

GPU-PV assigns a render device; a display device still needs to exist. Three options:

1. Microsoft Hyper-V Video (default) — max 1080p @ ~60 Hz.
2. Virtual Display Driver + streaming (recommended) — install Virtual-Display-Driver, pair Sunshine/Moonlight (or Parsec) inside the guest and connect with all local remote desktops closed. High resolution + high refresh + audio.
3. USB display adapter + GPU-PV — pass through a USB controller, plug in a DisplayLink / SM768-based adapter as the physical display device.

• Host: install usbipd-win.
• Guest: install usbip-win2, then run the USBProxy.exe guest agent bundled in the release.

Currently the tool needs to stay open to keep the USB link alive; a background service is on the roadmap.

• .NET 8.0 desktop runtime (bundled in single-file publishes).
• Hyper-V role enabled on the host.
• Windows 10 Pro / Enterprise / Education (Build 17134+), Windows 11 Pro / Enterprise, or Windows Server 2019 / 2022 / 2025. Home editions do not ship the Hyper-V role.
• For confidential-compute, GPU-PV and PCIe pass-through features: matching CPU + firmware support (VT-x/AMD-V, IOMMU/VT-d, SEV-SNP / TDX / SGX).

Released under the GNU General Public License v3.0.