Can't join a Skype meeting after you run Reset-CsPoolRegistrarState in Skype for Business Server 2015

Applies To
Skype for Business Server 2015

Symptoms

A user can't join a Skype meeting after you run the following cmdlet in PowerShell in a Microsoft Skype for Business Server 2015 environment.

Reset-CsPoolRegistrarState -ResetType FullReset

Resolution

To fix this issue, install the January 2018 cumulative update 6.0.9319.514 for Skype for Business Server 2015, core components.