https://learn.microsoft.com/en-us/powershell/module/skypeforbusiness/reset-cspoolregistrarstate?view=skype-ps&redirectedfrom=MSDN
Reset-CsPoolRegistrarState (SkypeForBusiness) | Microsoft Learn
The Reset-CsPoolRegistrarState cmdlet enables you to reset the Windows Fabric service (FabricHostSvc) and the Skype for Business Server Registrar service...
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