Questions tagged [hyper-v]
Microsoft Hyper-V is a hypervisor-based virtualization system for x64 systems. Hyper-V existed as a stand-alone product called Microsoft Hyper-V Server, in Windows Server 2008 and the last and final release for Windows Server 2019. Both variants are able to run in Windows Server Core versions.
2,490 questions
3 votes
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Microsoft Hyper-v 2016
I cannot move some VM from host1 to host2 with live migration, the process started but failed. From critical event log I have the following error: Live migration of 'Virtual Machine ORAMARS' failed. ...
0 votes
0 answers
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DNS breaks periodically on virtual domain controller until vNIC is removed and re-added
Got a weird issue that I've been dealing with for a while and haven't been able to permanently fix. Got a virtual Windows Server 2016 domain controller and several other VMs running on a Server 2016 ...
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1 vote
1 answer
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Why is NAT not working for a pfSense firewall virtualized in Hyper-V running on Windows Server 2025 with an internal switch?
I have a pfSense VM in Hyper-V with two network adapters, one for a private switch and one for an internal switch. I need to allow pfSense managed access to the Internet using the internal switch by ...
1 vote
0 answers
401 views
Hyper-V 2016 Windows VMs won't start after Windows Updates: Frozen on white dot boot screen [closed]
After installing the latest July 2025 Windows Updates yesterday, two virtual machines running "Windows Server 2025" on an older "Hyper-V Server 2016" Host are now stuck at the ...
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Hyper-V Event log Error Hyper-V-SynthStor 12636 pointing to a non existent VHD
I have a strange error in my event log, which occurred as the first error in a series of errors following a connection loss of my iSCSI storage on one of our Hyper-V 2016 Cluster nodes. The error code ...
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0 votes
1 answer
285 views
Hyper-V Ignoring Maximum Bandwidth Setting on External Virtual Switch
I'm running Hyper-V on Windows 11 and trying to limit the network bandwidth of a virtual machine using the Maximum Bandwidth setting in the Hyper-V Manager GUI (under Network Adapter → Advanced ...
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1 vote
1 answer
144 views
Slow performance in virtual machine and host server during file copy and SQL activities
We have a Windows Server 2019 Hyper-V host with a Windows 10 VM guest with SQL installed. The guest has slow file copy operations and SQL select queries. The host has 2x 10G LAN ports. One port is ...
1 vote
1 answer
191 views
HyperV RTC clock not set on boot
I have a VM with Oracle Linux 5.5 where the BIOS clock (also known as hardware clock or RTC) is wrong after boot. What I did: boot the guest Linux VM with the boot parameter init=/bin/sh check time ...
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0 votes
1 answer
402 views
How can I determine whether Java is using huge pages?
This article instructs how to set up huge pages for Java in Linux. I went through the following steps: Added lines echo 4294967295 > /proc/sys/kernel/shmmax and echo 1536 > /proc/sys/vm/...
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0 votes
1 answer
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Cannot reach Debian virtual machine with web server running in Hyper-V guest from host or another guest
I have a Windows 11 Hyper-V host with two guests, Windows Server 2012, and Debian 12, both has web servers. From host I can reach web server on Windows Server 2012 but cannot reach web server on ...
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0 votes
0 answers
50 views
How mount a windows host local directory in pod
I'm running minikube v1.31.2 (Kubernetes v1.27.4 sur Docker 24.0.4) on Microsoft Windows 10 Pro, with HyperV driver I want to use a local directory (windows host's directory) as a volume in minikube, ...
3 votes
2 answers
362 views
Challenge Managing disk in Hyper
I recently was tasked with managing a a few servers and one is particularly turning out to be difficult. I'm relatively new to managing server on Hyper-V and so I'm careful not to mess anything up. I ...
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0 votes
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Azure site recovery agent fails at setup
I am trying to register a Hyper-V server, but when I select the registration key file and the agent starts the process, it fails. The error says something like it couldn't be registrated due an ...
1 vote
0 answers
204 views
Authentication of Hyper-V-Manager fails on Windows 11 and Windows Server 2022
I've two running VM-Hosts based on Hyper-V Server 2019. These hosts are accessable using Hyper-V-Manager and vmconnect.exe on Windows 10 and Windows Server 2012R2. But on newer Windows Versions (...
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0 votes
1 answer
299 views
Unable To Connect To Hyper-V Server 2019 - CredSSP
I have a non-domain joined fresh Hyper-V 2019 Server that I can not connect too. I am using the Hyper-V Manager and selecting the "Connect to Server..." option and then entering in the ...
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