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jr2299's avatar
jr2299
Brass 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

Davanna-White's avatar
Davanna-White
Icon for Microsoft rankMicrosoft
Aug 25, 2026

Hey folks, heads-up that we know this is an issue and we're working on a fix for it! Apologies for the inconvenience. 

jr2299's avatar
jr2299
Brass Contributor
Aug 26, 2026

Thank you for that Davanna!

Some things we have found:

We have found that when using the latest version of WAC, following the instructions to create a self signed certificate for more than 60 days doesn't solve the problem. 

Additionally, we found that when installing on a machine that has a connection to the internet we have the same VMConnect issue. We think this is because WAC automatically forces the latest extension updates which we think might be the source of some problems.