Fixed issues in 2.9 LTSR CU6

Last published : Oct 16, 2026

HDX RealTime Optimization Pack 2.9 Cumulative Update 6 (CU6) contains all fixes that were included in HDX RealTime Optimization Pack 2.9, Cumulative Update 1, Cumulative Update 2, Cumulative Update 3, Cumulative Update 4, Cumulative Update 5, plus the following fixes:

In some scenarios, audio calls between optimized Skype for Business users and Microsoft Teams users cannot be recorded.
When using some HTTP proxy configurations, the RealTime Optimization Pack might work in fallback mode only.