Event ID 16385 floods in Skype for Business Server 2015 Director pools

Applies To
Skype for Business Server 2015

Symptoms

You may find that the following event fills up Windows Fabric event logs in Microsoft Skype for Business Server 2015 Director pools:

Note

  • Log Name: Microsoft-Windows-WindowsFabric/Admin
  • Source: Microsoft-Windows-WindowsFabric
  • Date: Date/Time
  • Event ID: 16385
  • Task Category: Reliability
  • Level: Warning
  • Keywords: Default
  • User: NETWORK SERVICE
  • Computer: ComputerFQDNName
  • Description: FM resolving failed with FABRIC_E_PARTITION_NOT_FOUND Event Xml

Cause

This issue occurs because the Windows Fabric cluster isn't set up properly in Skype for Business Server 2015 Director pools that have more than two servers.

Resolution

To fix this issue, install the December 2017 cumulative update 6.0.9319.510 for Skype for Business Server 2015, Front End server and Edge server.