3,051 questions with Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V tags

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2 answers

Hyper-V SET Team Causing TCP Retransmissions with Dynamic Load Balancing

Hi guys, Guest VMs are seeing frequent TCP retransmissions when network traffic is distributed across a Hyper-V Switch Embedded Teaming (SET) configuration. Packet captures indicate that Dynamic load balancing is distributing traffic across multiple…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-09-07T14:51:39.1133333+00:00
Lysa Analyst 0 Reputation points
answered 2026-09-07T15:23:10.86+00:00
Domic Vo 31,980 Reputation points Independent Advisor
2 answers

Windows 11 25H2: Hypervisor detected and VBS running despite Hyper-V, VBS, Credential Guard disabled

(Edited) Windows 11 Home 25H2 (Build 26200.8655) I am trying to completely disable VBS and the Windows hypervisor because VirtualBox is running in Hyper-V mode (green turtle icon) and performance is significantly reduced. I have already disabled: …

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-06-20T02:21:06.03+00:00
DavidBeaumont 5 Reputation points
edited an answer 2026-09-05T12:05:00.4066667+00:00
davekp 0 Reputation points
1 answer

Shielded VM Key Storage Provider (KSP) – TPM 2.0 Communication Lockup

Hi all, A Shielded VM fails to power on with the error: “The Virtual Machine Subsystem failed to decrypt the VM state.” Further diagnostics indicate that the host Key Storage Provider (KSP) has lost communication with the physical TPM 2.0 module. What is…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-09-04T15:53:35.06+00:00
Fath Swift 0 Reputation points
answered 2026-09-04T16:50:53.55+00:00
Scott Nguyen 1,965 Reputation points Independent Advisor
2 answers

The Windows Hypervisor Platform fails to be enabled on my Microsoft Surface Laptop 4, why is that??

I have tried creating a virtual device in my Android studio but once installed the Windows Hypervisor Platform shows its not enabled, when trying enabling it, it prints out an error as follows " Failed to enable WHPX: Unknown error (code:…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-08-25T23:13:49.37+00:00
Stanleon Exaud 0 Reputation points
answered 2026-08-26T02:41:15.3733333+00:00
Hoang Le 4,415 Reputation points Independent Advisor
2 answers One of the answers was accepted by the question author.

Is it possible to add support for DirectX 12 in Hyper-V's GPU-P?

My system specs: CPU: AMD Ryzen 7 5800X GPU: AMD Radeon RX 6800XT RAM: 64GB DDR4 @ 3333MT/s OS: Windows 11 25H2 I’ve tested several 3D applications running on Hyper-V virtual machines using GPU Paravirtualization, and everything worked perfectly —…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2025-11-01T20:07:27.4133333+00:00
Arturbc 26 Reputation points
commented 2026-08-25T06:10:39.1633333+00:00
JuliaMarvin 22,185 Reputation points Volunteer Moderator
1 answer

GPU ALLOCATION ISSUE TO VM's WITH WINDOWS 11 PRO OS

Hi Microsoft Community, Good day! I currently have a Dell Precision Tower server running Windows 11 Pro. I have set up Hyper-V with four virtual machines (VMs), which will be used for business and client purposes. One of the requirements is to allocate…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-08-24T23:43:44.4433333+00:00
Ino Sone 0 Reputation points
answered 2026-08-25T02:27:20.2466667+00:00
Hoang Le 4,415 Reputation points Independent Advisor
2 answers

Difficulty disabling Hyper-V

Good evening, everyone! How are things? I need to disable Hyper-V, VBS (Virtualization-Based Security), and Device Guard so I can enable the AMD-V virtualization feature for my VMs (VirtualBox and/or VMware). The feature is already enabled for the VMs…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-08-24T00:02:48.76+00:00
Johanderson Marinho 0 Reputation points
answered 2026-08-24T00:17:16.88+00:00
Marcin Policht 106.7K Reputation points MVP Volunteer Moderator
2 answers

Shielded VM Fails to Start Due to TPM/KSP Initialization Error

A Shielded VM fails to start with the following error: The Virtual Machine Subsystem failed to decrypt the VM state. Diagnostics indicate that the host Key Storage Provider (KSP) is unable to communicate properly with the TPM 2.0 chip. What is the…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-08-19T04:19:05.6166667+00:00
Hafiz Omar 0 Reputation points
answered 2026-08-23T22:59:42.23+00:00
Allan Solomon Mejia 7,835 Reputation points
1 answer

Critical Hyper-V SET Switch Bug: Switch Randomly Changes to Internal After Reboot on Windows Server 2025

Dear Microsoft Learn community, I'm facing a critical and highly concerning issue with the Hyper-V Switch Embedded Teaming configuration on my Windows Server 2025 failover cluster. After rebooting the Hyper-V virtualization host, the SET switch…

Windows for business | Windows Client for IT Pros | Networking | Network connectivity and file sharing
Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
Windows for business | Windows Server | User experience | Other
asked 2025-02-15T20:25:53.4533333+00:00
Krasimir Rangelov 285 Reputation points
commented 2026-08-19T18:10:52.09+00:00
Anthony Kolka 0 Reputation points
2 answers

Como corrigir o erro de SLAT e extensões de modo de monitor VM desativados?

Como posso corrigir o erro em que o SLAT (Second Level Address Translation) e as extensões de modo de monitor VM aparecem como desativados? O problema pode estar relacionado a recursos de isolamento do núcleo do Windows, como VBS ou Hyper-V, que estão…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-08-18T02:39:21.9666667+00:00
Lean Borges 0 Reputation points
answered 2026-08-18T05:32:32.15+00:00
Harry Phan 30,475 Reputation points Independent Advisor
1 answer

Secure Kernel memory warning

VBS and Credential Guard are enabled across our Hyper-V host cluster. I am observed an unexpected 15% drop in overall host memory availability based on the Secure Kernel (securekernel.exe) page pool reservations refer attached details. Please advise?

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-08-04T16:54:36.5033333+00:00
Jack 5T 20 Reputation points
answered 2026-08-04T18:57:48.56+00:00
Levi Cornwell 5 Reputation points
1 answer

How can I change default codepage (What GetACP() returns) on a Windows Container running in Hyper-V VM

We are using Windows docker containers on a Windows host to help increase our testing bandwidth. We are using Hyper-V VM because each test may need to be isolated. Our tests expect the GetACP() to return 1252, but in the containers, GetACP() always…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2020-12-19T00:09:52.297+00:00
Adam Skwersky 1 Reputation point
answered 2026-08-04T16:13:30.8233333+00:00
ierrad mathis 0 Reputation points
1 answer

Windows 11 Hyper-V COM port passthrough

HI, I have a Windows 11 Host running Hyper-V to an XP Guest. I have a COM3 physical port that I want to pass through to the Guest. I have set the Hyper-V Manager - Virtual Machine image, Settings, Hardware, COM 1, Select Named Pipe, Pip Name: COM3;…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
Windows for business | Windows Client for IT Pros | User experience | Other
asked 2023-11-29T18:49:45.9766667+00:00
Boyd Mills 0 Reputation points
answered 2026-07-30T11:50:51.4633333+00:00
ROGary 0 Reputation points
2 answers

Claude Cowork Issue - vfpext driver file missing from System32\drivers despite Hyper-V fully enabled (Windows 10 Pro)

Subject: vfpext driver file missing from System32\drivers despite Hyper-V fully enabled (Windows 10 Pro) OS: Windows 10 Pro Build: 10.0.26200.8655 (confirmed via DISM output) Issue: The Hyper-V VFP switch extension driver (vfpext.sys) is missing from…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-07-13T16:04:52.6133333+00:00
Lara Dunning 0 Reputation points
commented 2026-07-22T23:03:02.71+00:00
Randy Goldberg MD MPH 0 Reputation points
2 answers

How to get an internet connection on a Hyper-V Virtual Machine using a Virtual Switch to work.

Hello, I had a virtual machine that had a Windows Server 2019 running Active Directory and other services an old virtualization server which later crashed. On recovery of the virtual hard disk, I launched it on Hyper-V, so now I am unable to get an…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-07-18T08:11:16.24+00:00
Humphrey Ngugi 0 Reputation points
edited an answer 2026-07-18T09:55:43.2133333+00:00
Humphrey Ngugi 0 Reputation points
2 answers One of the answers was accepted by the question author.

Windows VM Extending VM Partition Greyed Out

I allocated additional space on a Hyper-V host and when I log in to the VM and check the disk manager, I can see the unallocated space but I cannot extend my primary partition to it. I have read that the unallocated space has to be to the right of the…

Windows for business | Windows Server | User experience | Other
Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
Windows for business | Windows Client for IT Pros | User experience | Other
asked 2024-02-22T02:40:47.03+00:00
Falcon IT Services 226 Reputation points
commented 2026-07-17T22:12:50.7733333+00:00
TJ Cooper 26 Reputation points
7 answers

Windows 11 Pro 24H2 will not boot after enabling Hyper-V

Just upgraded from Windows 11 Home to Pro. I want to enable Hyper-V on my PC. I have verified that it does support it via "msinfo32". My PC is a Dell Inspiron 5593, Intel Core i5 10th Gen with 16GB of memory. After Hyper-V installs and…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2025-02-24T14:52:40.1966667+00:00
Jack Cooper 5 Reputation points
commented 2026-07-08T07:59:56.94+00:00
HotshotJacko 0 Reputation points
2 answers One of the answers was accepted by the question author.

Windows 11 Hyper-V and Shared Disks

Does Windows 11 allow the creation of shared disks for guest clusters? I know there's the option to create shared vhdx or vhds, but I'm unable to use it. Am I doing something wrong or it just doesn't work on Windows 11? Thanks.

Windows for business | Windows Client for IT Pros | User experience | Other
Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2023-06-16T00:16:44.0933333+00:00
rafael9908 40 Reputation points
edited an answer 2026-07-08T05:55:43.3+00:00
JuliaMarvin 22,185 Reputation points Volunteer Moderator
2 answers

How to enable vmcompute.exe and HNS?

the virtual machine has missing parts vmcompute and HNS. need to use a new softwre package

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-04-22T19:32:56.6466667+00:00
Edward Olmstead 5 Reputation points
commented 2026-07-01T18:09:55.2+00:00
Musoni Mary 0 Reputation points
2 answers

Windows 11 enters Automatic Repair after enabling WSL when AMD SVM is enabled

Environment: Device: Lenovo Yoga Air 14s 【please fill in the exact model】 CPU: AMD Ryzen 7 7840S Windows edition: Windows 11 【Home / Pro】 Windows version/build: 10.0.26200.8246 BIOS version: M6CN37WW 【please confirm】 BIOS virtualization option: AMD SVM /…

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
asked 2026-05-12T12:47:14.9766667+00:00
Y an 0 Reputation points
answered 2026-06-29T12:41:42.1533333+00:00
Roland Gasser 0 Reputation points