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Untagged VLAN - Server 2025 Hyper-V
Hi, I have a strage issue and not finding a solution. Using Server 2025 with two node Hyper-V cluster. Most of the machines using VLANs which works fine. Some machines using no VLAN config. Which usually means the "Access VLAN 1" regarding our switch configuration. With Server 2019 this worked fine. With Server 2025 same NIC port, same server/NIC hardware "Untagged" VMs don't get any network connection. If I add a second NIC to the VM "Untagged" the NIC get immidiatly an IP address and has a proper connection. If I remove the first NIC, the second NIC stop working. It looks like something has changed with Server 2025 (maybe already with Server 2022). Do you have any idea what kinde of problem I have found? Thanks Jack
PowerShell counterpart for Failover Cluster Manager "Live Migration Settings"
In Failover Cluster Manager, there's "Live Migration Settings" where I can define what cluster networks I want to carry live migration traffic. Even after some research, I cannot find a PowerShell cmdlet that lets me do the same...
WSUS Automatic Patch and Reboot in Offline Hours
Hello, I'd like to patch and reboot some of our servers automatically in the offline hours, configured by GPOs. I have managed to get the patches installed and defined a active window. But the servers don't reboot. On issue could be the active window. On the GUI the maximum active window can be max 18h. Is this also valid if you set the window per GPO? As I want to have a very narrow window for the reboots so I need a active window e.g. 22h. Also the start could be ater than the end as I want to cover midnight. E.g. active window starts at 4:00 and ends 2:00 so retarts could be triggered between 2:00 and 4:00 Thanx __LeoServer 2022 WMI Issues
Hi there, I have a Server 2022 with WMI problems affecting the server in a few ways. The server is a domain controller, RD Broker and hosts some files also. The server actually operates ok for the users day-to-day. I discovered the issue when opening AD Connect, getting an Invalid Class error message. When running various fundamental commands at the command prompt (e.g. tasklist) I get the same error. When looking at the WMI Control in Computer Management again - Invalid Class. I have tried various fixes found online such as verifying the WMI repository (it comes back as consistent) but I think I've reached a dead end. I don't want to restore the server from backup as I believe this issue has been ongoing for a couple of months before it was discovered. I can't get in to the Remote Desktop part of server manager to replace the certificate, and the certificate expires next week. Does anyone have any ideas please? Any help greatly appreciated, thanks. Chris
PFN LIST CORRUPT windows server 2016
Hi everyone We’ve recently been experiencing BSOD with the error code PFN_LIST_CORRUPT when using RDP from Apple applications like Jump Desktop or the Windows RDP app. As soon as we log in the servers get the BSOD. We must disable "redirect" in the option "Devices & Audio" in the Windows APP and that works for log in the server and not get the BSOD with that error. This issue occurs only on Windows Server 2016, across multiple servers that are all virtualized on VMware, and spread across different ESXi hosts. Any Idea? Regards,
Compatible Windows Server Hardware Inquiry
Witch Windows server version can take place on HP DL380 Gen9 with Intel Xeon E5-2620V3 / 2.4 GHz ? Previously, I was running Windows Server 2012, but due to the end of technical and service support, I would like to upgrade my software. Please recommend the best version.
Hyper-V SMB UNC LocalIP/name avoiding loopback
Hello, I have the following scenario: Two standalone servers joined to a domain (I can't set up a failover cluster at the moment) What I want to achieve is: Access the storage resources via UNC SMB paths in order to perform a storage migration from both nodes \\svhpv1\VMs \\svhpv2\VMs But when I try to have svhpv1 access \\svhpv1\VMs, I get an "Access Denied" error. I believe this error occurs because the access is being attempted through the loopback adapter. I’m experiencing the same issue with svhpv2 when trying to access \\svhpv2\VMs. How can I avoid the loopback so I can properly configure my scenario? Any help is appreciated.
ISO version reporting
Is there a standard way in which the Windows installer ISOs can be interrogated for which version of Windows is on them? This is a bit convoluted so I'll explain the use case. When installing W10 on one of the last generation of x64 Apple Macs, the Boot Camp installer will take the ISO and prepare it by injecting drivers - particularly that for the T2 security chip which handles the first part of the boot process and is the storage controller, among other things. With W10 going out of support (and W11 not really an option due to the hardware requirements) I have been looking at trying to install one ofthe W10-based server versions instead. These are obviously very similar in structure and would probably install and work from a technical standpoint - but if I try it the Boot Camp installer reports that the ISOs aren't Windows 10, and won't proceed. I'm basically looking to clarify whether there is any minor editing of the ISO (or files on it) which can be done to convince Boot Camp that actually this is W10. Anyone know? Thanks
iSCSI Target servers - high availability?
Hello, I have two VMs configured as iSCSI target servers with a 600GB VDHX file on each, and then two VMs configured as file servers in a failover cluster. The iSCSI servers should serve out the data that is shared in the failover cluster file server. I would like to also configure the iSCSI target servers in high availability mode, so that they replicate their data and if one of the iSCSI target server go down, the shares and data is still accessible. How would I go about doing this? So far I've tried setting up storage replica, but since I only have one site, it doesn't allow me to replicate to the second iSCSI disk from the one that currently has data. I also tried iSCSI Target-role in the failover cluster manager, but it puts me back at the same situation where if the storage server with the virtual iSCSI disk goes down, I lose access to all data.NUMA Problems after In-Place Upgrade 2022 to 2025
We have updated several Hyper-V hosts with AMD Milan processors from Windows 2022 to Windows 2025 using the in-place update method. We are encountering an issue where, after starting about half of the virtual machines, the remaining ones fail to start due to a resource shortage error. The host's RAM is about 70% free. We can only get them to start by enabling the "Allow Spanning" configuration, but this reduces performance, and with so many free resources, this shouldn't be happening. Has anyone else experienced something similar? What has changed in 2025 to cause this issue? The error is: Virtual machine 'R*****2' cannot be started on this server. The virtual machine NUMA topology requirements cannot be satisfied by the server NUMA topology. Try to use the server NUMA topology, or enable NUMA spanning. (Virtual machine ID CA*****3-ED0E-4***4-A****C-E01F*********C4). Event ID: 10002 <EventRecordID>41</EventRecordID> <Correlation /> <Execution ProcessID="5524" ThreadID="8744" /> <Channel>Microsoft-Windows-Hyper-V-Compute-Admin</Channel> <Computer>HOST-JLL</Computer>