186 questions with Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V tags

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1 answer

Windows Server Backup keeps failing

Hi, we are having issue with the "Windows Server Backup" . It keeps giving us an error The semaphore timeout period has expired - Unknown Error (0x8004245f) In the event viewer I can see Backup error '0x807800C5' (There was a failure in…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-08-07T02:32:48.23+00:00
Green Hat 0 Reputation points
commented 2025-08-12T00:04:54.4466667+00:00
Green Hat 0 Reputation points
1 answer One of the answers was accepted by the question author.

Windows 11 hyper-v loss of connection within vm after windows update

I have had problems with loss of network connection from within a number of VMs after performing recent windows 11 preview updates (latest version: 10.0.26200 Build 26200). These problems can mean an inability to login to the machine with the login…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-08-10T23:30:48.3066667+00:00
Neil Gallacher 20 Reputation points
commented 2025-08-11T10:06:54.1066667+00:00
Neil Gallacher 20 Reputation points
12 answers

Problem booting Windows 2012R2 VM on Windows 2025 Hyper-V

We're having a problem with a Windows Server 2025 Hyper-V cluster. We have 2 identical clusters (same hardware, same BIOS version) and when we move a Windows 2012R2 VM from one cluster to another it does not boot any more (tested with 2 different…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-07-20T05:33:22.69+00:00
Stefan Cuypers 45 Reputation points
edited an answer 2025-08-10T17:22:32.88+00:00
Hammer 0 Reputation points
2 answers

Trouble moving a Windows 7 VM from a Windows 10 to a new Windows 11 host

Hi all, Years ago, I virtualized an old Windows 7 machine using Hyper-V and have been running it on a Windows 10 box. Everything is working well except that host machine is getting old too and in anticipation of its inevitable demise, I had to move the…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-08-07T02:29:40.53+00:00
DC Dweller 1 Reputation point
commented 2025-08-09T04:42:44.32+00:00
BryceSor 3,890 Reputation points Volunteer Moderator
1 answer

Problem; the windows 11 iso file is not activated from hyper-v

i have downloaded the iso file and not mounted it. From hyper-v I I connect, and START, then message Press any key to boot from cd or dvd and.. message after some seconds 1.scsi dvd .. the boot loader failed 2.network adapter . A boot image was not…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-07-15T15:50:04.01+00:00
Maths Bengtsson 0 Reputation points
answered 2025-08-08T08:29:39.38+00:00
Henry Mai 2,375 Reputation points Independent Advisor
2 answers

After exporting hyper-v vmcx, vhdx avhdx will not be automatically merged

I use root\virtualization\v2 ExportSystemDefinition, and I have the following settings: exportSettingData["CopySnapshotConfiguration"] = 1; exportSettingData["CopyVmRuntimeInformation"] =…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-08-07T03:16:11.6933333+00:00
Tim 0 Reputation points
commented 2025-08-08T03:03:59.7+00:00
Henry Mai 2,375 Reputation points Independent Advisor
1 answer

Hyper-V failed to import virtual machine

while importing virtual machine to the new server 2025 i got the error: hyper-v encountered an error during the import operation. server failed to realize.

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-08-05T21:46:54.98+00:00
Michael Bulanov 0 Reputation points
answered 2025-08-06T06:27:51.1666667+00:00
Henry Mai 2,375 Reputation points Independent Advisor
1 answer

How to fix the “Video remoting was disconnected” error in Hyper-V?

Hello everyone, I'm experiencing an issue with my Hyper-V setup and I'm hoping someone might be able to help or share insights. I have a Windows Server Core 2025 machine hosting Hyper-V. It's located on a remote network, which I access from my Windows 10…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-08-04T12:31:44.1566667+00:00
Francois P 20 Reputation points
answered 2025-08-05T09:07:19.89+00:00
Henry Mai 2,375 Reputation points Independent Advisor
2 answers

Hyper-V host VMs unable to communicate with VMs on other clustered host?

Hey all - I'm hitting a wall with this one and was hoping someone might spot something obvious I'm missing. Sorry if my description gets a bit dizzying... I have 2 Server 2022 hosts in a failover cluster, each with similar networking: 2x 40Gbps links…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-07-31T21:06:44.3333333+00:00
Jon Hall 0 Reputation points
answered 2025-08-01T11:44:14.6366667+00:00
Yash Smith 0 Reputation points
1 answer One of the answers was accepted by the question author.

Migrate a 3 node Hyper-v cluster from one domain to another

Hello, I need to migrate a 3-node Hyper-V cluster from one domain to another. They are all using shared cluster storage and have 10 VMs across all 3. I have outlined the steps below, but just want to make sure I am not missing anything. Any assistance…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-07-15T15:02:30.03+00:00
John Evans 40 Reputation points
accepted 2025-07-29T10:05:03.9466667+00:00
John Evans 40 Reputation points
1 answer

What is Support Doing to Recover Hyper-V Node from KB5062557?

On one Windows Server 2019 Hyper-V Failover Cluster node the Cluster Service is repeatedly stopping and restarting, causing the node to fail to rejoin the cluster and is entering quarantine states. Our configuration is using BitLocker with Cluster Shared…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-07-24T17:40:57.58+00:00
MrMJFisher 51 Reputation points
edited a comment 2025-07-25T15:25:29.1133333+00:00
MrMJFisher 51 Reputation points
1 answer

Hyper V replication and failover on SAN storage

Hi Everybody, Could we replicate hyper V on Two hyper V server from Shared SAN storage. We want to have SAN storage to be the location for two Hyper V server virtual machine hard disk We want to replicate the hyper V server to another one in case of…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-05-05T11:56:29.05+00:00
Mohamed khairy 161 Reputation points
answered 2025-07-21T09:21:20.6233333+00:00
Henry Mai 2,375 Reputation points Independent Advisor
2 answers

Hyper-V 2025: NUMA Spanning forces cross-node memory even for small VMs, and no oversubscription possible with spanning off

Hi all, I’ve been testing Hyper-V on Windows Server 2025 with a dual-socket AMD EPYC 9175F server (16 cores per socket / 32 total). Each NUMA node has its own directly attached NVMe storage and RAM. I’m running multiple VMs, each with 16 vCPUs and 50…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-06-29T14:16:25.6933333+00:00
ReubenTishkoff 0 Reputation points
answered 2025-07-14T15:36:50.8233333+00:00
ReubenTishkoff 0 Reputation points
2 answers

How to hide the topbar in Hyper-V client in full screen?

This thing here is in the way

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-07-03T09:30:39.1433333+00:00
Johannes Kingma 46 Reputation points
edited the question 2025-07-08T21:56:50.14+00:00
Rob Caplan - MSFT 6,117 Reputation points Microsoft Employee Moderator
1 answer

How to setup storage migration from standalone Hyper-V host to Hyper-V failover cluster

Hi, We have several standalone Intel-based Hyper-V hosts running W2019 and a new 2-node AMD-based Hyper-V cluster running W2025. All hosts have full connectivity over a common high-speed management network and are also members of the same domain. When…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-06-09T19:37:17.2566667+00:00
Thunderbolt69 0 Reputation points
answered 2025-06-18T08:39:55.6866667+00:00
Anonymous
4 answers

Cluster Validation Stuck

Hello everyone, I'm having the following problem when creating a 2-node HA cluster (Server 2025) using the Windows Admin Center. Up to the point ‘Validate Cluster’ everything worked fine. Unfortunately, the process gets stuck at ‘1% Gathering data about…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-03-28T15:30:51.6+00:00
Schmidt Marc 30 Reputation points
answered 2025-06-17T17:01:00.82+00:00
Scott Sisk 0 Reputation points
2 answers

BSOD windows server 2025 vmswitch.sys

We have a 2 node hyper-v cluster. When we unplugged 2 network cards of a 4 teaming Vmswitch, we got a BSOD with a vmswitch.sys error. Server are Dell PowerEdge R650 with Sezrver 2025 Datacenter

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-06-02T16:13:00.0966667+00:00
Anthony LEROUX 0 Reputation points
answered 2025-06-05T09:52:42.6733333+00:00
Henry Mai 2,375 Reputation points Independent Advisor
1 answer

Cannot create a virtual machine in the hyperv

Hello, when i to create a virtual machine the hyper v iam getting an error its called " Hyper-v encountered an error while configuring the network on new virual machine " Hello, When I try to create a new virtual machine using Hyper-V, I get…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-03-21T11:18:09.3933333+00:00
Ahamed Mansoor 0 Reputation points
answered 2025-03-24T06:59:34.82+00:00
Anonymous
0 answers

iSCSI Hyper-V 2019 Host - Auto Configure (not finding any devices)

Hello, I am currently having issues with 'Auto configuration' in the iSCSI Initiator on a Hyper-V 2019 Host, the iSCSI is connected successfully and I've added my targets however Auto configuration does nothing. notes: Hyper VM 2019 Server Host no…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2024-09-13T02:45:16+00:00
Anonymous
1 answer

facing issue in hyper v manager to manage the server and their cummunication.

I have 2 physical server PowerEdge r450 and i installed window server 2022 core and install hyper v manager on window 11 to manage them. I am facing issue: 1: Cannot add the fibre channel 2: want to communication with 2server how can i do that. 3: how…

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
asked 2025-02-23T08:22:28.4066667+00:00
m sami 0 Reputation points
edited an answer 2025-02-26T05:38:24.9533333+00:00
Anonymous