Key Activation to VAMT with error “The specified product key is invalid, or is unsupported by this version of VAMT”


Install the latest Windows Kit and do the following

  1. Copy the files under C:\Windows\System32\spp\tokens\pkeyconfig from WS2019 machine
  2. Past them on this Path C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\VAMT3\pkconfig

How to create GPO to push Product key update from KMS server using WMI Access

Step 1: Edit the group policy object you wish to put these settings into.
Step 2: Expand the Computer Config > Policies > Windows Settings > Security Settings > Windows Firewall with Advanced Security > Windows Firewall with Advanced Security > Inbound Rules node.
Step 3: Right-click in the working area and choose New Rule…
Step 4: Choose the Predefined option and select Windows Management Instrumentation (WMI) from the drop-down list, Next.
Step 5: There are number of options here, but I tend to just select one: the (WMI-In) option with the Domain profile value. If you aren’t sure what you need, then just remember you can come back and add the others later. Next button.
Step 6: Allow the connection > Finish

Make sure that the below TCP ports already allowed on

  • TCP Port 135 which is used by RPC.
  • TCP Dynamic port range: 49152 to 65535 (default)
  • These ports should be opened bi-directional between source and destination.
  1. The WMI (Windows Management Instrumentation) service is enabled on the client machine.
  2. To enable WMI service, click Start -> Services -> Right click Windows Management Instrumentation and select restart