How to pass "ajax error 500" with Windows Admin Center 24.10 (v2)

Ville Tuulos 15 Reputation points
2025-04-06T20:14:19.1633333+00:00

Hi there,

I did successfully deploy the new v2 of Windows Admin Center (Build 2.4.2.1, 2410). I've got a Dell HW as a server, where I have Windows Server Core 2019 running. The server core runs as a Hyper-V host. It has been nice and easy to run Hyper-V with Windows Admin Center so far but the most recent v2 seems to be causing all kinds of head-ache. Seemingly everything worked.

  • WAC install can be run from admin cmd as is
    • Setup TCP port as 44301 -> ok
    • Check firewall -> ok
    • ensuring that my star-certificate can be used -> ok
    • set trusted hosts as all -> ok
    • set anonymous use as ok ->
    • set windows authentication as the method -> ok
    • setting my own FQDN as de-facto connect point -> ok
    • it even checks that PS remoting is on -> ok
  • I tested via powershell that my firewall works
  • starting WindowsAdminCenter service
  • running from a client pc the https://FQDN:44301
    • Great, it works, loads bootstrap and everything
    • I get in with my admin (<local machine>\Administrator)
  • Now here is where it gets funny
  • I try to click to my "Server" -> "ajax error 500"
    • this is so weird, no real error stack
    • kind of getting a feeling that the WAC v2 is just incomplete
    • How do you get pass this point?

ShotOnError_WAC_2410_AjaxError_2025-04-06

(above the screen cap on the error after clicking my Server "Hyperpilvi" -> "Connection error")

Any ideas how to resolve this one?

Windows Server | Remote and virtual desktops | Session connectivity
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2 answers

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  1. lukecelente 5 Reputation points
    2025-04-18T14:43:07.6766667+00:00

    I was getting the AJAX 500 message AFTER I renamed my server. I stopped the process and reinstalled and worked again.

    https://learn.microsoft.com/en-us/windows-server/manage/windows-admin-center/deploy/install?tabs=server-core&pivots=windows-server-2022

    1 person found this answer helpful.
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  2. Randall Okwei 16 Reputation points
    2025-04-23T00:46:31.1633333+00:00

    Find the machine certificate Make sure that the subject is not blank, as well manage the keys by adding the network service account with full control.

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