Symptoms
Assume that you're using the Microsoft Skype for Business 2016 client on a Windows 10 computer that has multiple network adapters present. When you try to transfer a file to a legacy Communicator client, the file transfer fails.
Cause
The changes in Windows 10 expose an issue with the IP address selection logic that's used by the legacy file transfer process.
How to fix this issue
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 latest update in June 2019 for Skype for Business for a Click-to-Run installation. To do this, open an Office program, such as Word, and then select File > Account > Update Options > Update Now.
Note If "Update Options" does not exist in the client, this is an .msi installation.
Don't see your Skype for Business client in the list? Click Skype for Business downloads and updates for a complete list of clients. Click-to-Run is the recommended way to install the Skype for business client. You can download the Click-to-Run client from the Office365 Portal.
After you apply the update, create a Group Policy to set the following registry key on clients:
|
Subkey |
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Lync HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Office\16.0\Lync |
|
Value |
EnableGetSuitableIPWithMultipleAdapters |
|
DWORD data |
1 |
Or, you can enable this update by creating a custom policy entry and adding it to the client policy, as follows:
$x = New-CsClientPolicyEntry -Name "EnableGetSuitableIPWithMultipleAdapters" -Value "true"
Set-CsClientPolicy -Identity "<ClientPolicyName>" -PolicyEntry @{Add=$x}
