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Can't transfer files to legacy Office Communicator clients from a Windows 10 computer with multiple network adapters

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Symptoms

Assume that you're using the Microsoft Skype for Business 2016 client on a Windows 10 computer that has multiple network adapters. When you try to transfer a file to a legacy Office Communicator client, the file transfer fails.

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Cause

The changes in Windows 10 expose an issue that affects the IP address selection logic that's used by the legacy file transfer process.

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Resolution

Important

Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

To fix this issue, install the September 1, 2020, update (KB4484501) for Microsoft Skype for Business 2016.

To enable this fix, create a policy by using one of the following options:

  • Create the following registry key on the client computers:

    Root: HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
    Subkey: Software\Policies\Microsoft\Office\16.0\Lync
    Value Type: DWORD
    Value Name: EnableGetSuitableIPWithMultipleAdapters
    Value Data: 0x00000001

  • Create the following client policy entry by using the Skype for Business PowerShell:

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

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

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Keywords: CI122506, kbHotfixAuto, kbfix, kb, can't transfer files to legacy office communicator with many network adapters

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Article Info
Article ID : 4576654
Revision : 9
Created on : 10/9/2020
Published on : 10/9/2020
Exists online : False
Views : 195