WSUS – Cannot have two servers clients in the same time

windows-server-2012-r2wsus

I'm running a WSUS within 2012 R2. I have two server, let's say Server1 and Server2. Both GPO are configured to use my WSUS server.

When I connect to WSUS server and launch the Update Services MMC, in the category "All Computers" I can see Server1, but not Server2.

When I run wuauclt.exe /resetauthorization /detectnow on Server2, the Update Services MMC shows up Server2, but no more Server1 …

I don't understand. Those two servers are VMware VM deployed from a template, they are both in the same domain as WSUS server. All VMs ping each other, no network related problem.

Any ideas ?

Best Answer

Thanks to @TomTom with his above comment. This is the explanation and how to solve (link) :

I deployed VM with template, and then join WSUS almost at the same time. So both Server (1 & 2) got the same WSUS ID.

So we need to reset this ID and renew the request to the WSUS Server.

  1. Start by stopping the Update Service (wuauserv)

  2. Delete Registry keys :

    • HKLM\Software\Microsoft\Windows\CurrentVersion\WindowsUpdate
      SusClientId
      SusClientIdValidation
      PingID
      AccountDomainSid

    • HKLM\Software\Microsoft\Windows\CurrentVersion\WindowsUpdate
      LastWaitTimeout
      DetectionStartTimeout
      NextDetectionTime
      AUState

  3. Delete SoftwareDistribution Folder on system (C:\Windows\SoftwareDistribution)

  4. Start Update Service

You can download the PS Script that does everything, at the first link.

Thanks again @TomTom.

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