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VAMT 3.1:  Unable to connect to the WMI service on the remote machine

Posted on 2016-07-20
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Last Modified: 2016-08-23
Hi All,

I recently setup a VAMT / KMS server on our network using Windows Server 2012 R2.  It can get the license status of the servers on the same subnet.  But when it scans the laptop/desktop subnet it returns the following error.

Unable to connect to the WMI service on the remote machine

I've disabled the window 7 firewall and anti virus.  It can PING and RDP to the computers.

Any suggestions?


Many thanks
D
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Question by:detox1978
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Forrest Burris earned 500 total points (awarded by participants)
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Have you tried running this command from one of the affected machines? netsh firewall set service RemoteAdmin enable. However, the manual process (per machine) once the KMS key is on the server, is this.

1 - Sit at the affected machine as admin and open a command prompt
2 - slmgr /skms (kms server name)
3 - slmgr /ato
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by:detox1978
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Sorry for the delay.  It turns out the built in Windows firewall is blocking the connection.

Any idea what rules I need to allow?
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by:Forrest Burris
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KMS communicates on port 1688. That should be all it needs.

However, make sure clients are setup this way: https://technet.microsoft.com/en-us/library/hh825136.

You'll also want to make sure WMI is configured properly. See here: http://www.bhargavs.com/index.php/2013/01/28/vamt-unable-to-connect-to-wmi-service-on-remote-machine/
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by:Forrest Burris
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Hoping all it looking good at this point.
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