RTCHost.exe process persistently consumes many CPU resources on a Skype for Business Server 2015 Front End server Content provided by Microsoft Applies to: Skype for Business Server 2015 Select Product Version All Products Workaround To work around this issue, restart the RTCHost.exe process. Resolution To resolve this issue, install the June 2015 cumulative update 6.0.9319.55 for Microsoft Skype for Business Server 2015 (Front End server and Edge server). Last Updated: Jun 23, 2015 Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.