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jr2299's avatar
jr2299
Tin Contributor
Jul 24, 2026
Solved

Cannot Connect to VMs in Windows Admin Center

Hi all, I have 1 Server Cluster made up of 3 Server 2022 Hosts on which there is a large number of VMs running on Hyper-V. The typical process for accessing the VMs has been through Windows Adm...
virtual machine
virtual machine connect
WAC
Windows Admin Center
  • jr2299's avatar
    jr2299
    Aug 03, 2026

    Hi there,

    So for us the issue wasn't anything on the hardware or OS side but for some reason the WAC extensions were just not working. We turned off automatic update extensions and reverted to previous extension versions.

    WAC Version: 2410
    Build: 2.4.2.1

    The relevant extensions with the versions we are using:
    Cluster Manager: 5.2.6
    Remote Desktop: 6.0.20
    Virtual machines and switches: Version 6.2.6 

    Hope this helps

SelinaKnow's avatar
SelinaKnow
Brass Contributor
Aug 03, 2026

Because the cluster and VM inventory still load, I would troubleshoot the VMConnect extension path rather than rebuilding Windows Admin Center again. From the WAC gateway, confirm the browser can reach each host over the management network and that CredSSP/WinRM settings have not changed. Then test VMConnect directly from Hyper-V Manager on one host using the same admin account. If Hyper-V Manager works but WAC stays on the loading screen, update Windows Admin Center and its extensions, clear the WAC gateway cache, and collect the browser console error plus WAC gateway logs. That evidence is more useful than another fresh WAC install.