Forum Discussion

jr2299's avatar
jr2299
Copper Contributor
Jul 24, 2026

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
Jamony's avatar
Jamony
MCT
Jul 27, 2026

The screenshot narrows this down: cluster inventory works, but WAC's browser-based VMConnect fails while the keyboard-layout field is unset and returns a JavaScript “undefined” error. Because it follows fresh gateways and two WAC versions, this alone does not show that Hyper-V or the guests are unavailable. First, explicitly select a keyboard layout before Connect. Retry in current Edge or Chrome InPrivate. If that works, clear cached site data for the WAC gateway. From Virtual Machines, try Download RDP file and open it with Remote Desktop Connection, using an account that can administer the Hyper-V host; success isolates the fault to WAC's web console. Confirm the Windows Admin Center and WinRM services are running. If it still fails, collect Microsoft-ServerManagementExperience errors from Event Viewer and a sanitized browser HAR during reproduction. Submit those, both WAC versions, and the exact error to Windows Admin Center feedback.