You receive a RTP and RCTP muxing issue after you upgrade the version of Microsoft Skype for Business Server 2015 to cumulative update 4 (CU4).


To fix this issue, install the February 2017 cumulative update 6.0.9319.277 for Skype for Business Server 2015, Conferencing Server. 

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Thank you for your feedback!