Symptoms

In a Virtual Desktop Infrastructure (VDI) environment, when you use a Skype for Business 2016 client in a virtual machine, the client will use the subnet of the virtual machine to register. If this client is in a Location Based Routing (LBR) enabled environment, you may be unable to receive a PSTN call because the server that hosts the client thinks the location of this client isn't valid for PSTN calls. In addition, the call will go to your voice mail.

Resolution

To fix this issue, install the March 5, 2019, update (KB4462190) for Skype for Business 2016.

Note Before you apply this update, make sure that you create a GPO to add a new DWORD registry key IsLBRInVDIEnabled and set the value to 1 in any one of these registry paths:

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Lync

or

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Office\16.0\Lync

Alternatively, you can enable this by creating a custom policy entry and add it to the client policy:

$x = New-CsClientPolicyEntry -Name "IsLBRInVDIEnabled" -Value "true"

Set-CsClientPolicy -Identity "<ClientPolicyName>" -PolicyEntry @{Add=$x}


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