The AVModalityPropertyChanged event is not triggered in Lync 2010 SDK Content provided by Microsoft Applies to: Lync 2010 Select Product Version All Products Symptoms The AVModalityPropertyChanged event is not triggered when the value of the AVModalityAudioNetworkQuality property or the AVModalityAudioDeviceQuality property changes inMicrosoft Lync 2010 SDK. Resolution To resolve this issue, install the following cumulative update: 2496325 Description of the cumulative update package for Lync 2010: April 2011 More Information For more information about the AVModalityPropertyChanged event, visit the following Microsoft website:AVModality EventsFor more information about the AVModalityAudioNetworkQuality property and the AVModalityAudioDeviceQuality property, visit the following Microsoft website:ModalityProperty Enumeration Status Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. Last Updated: Apr 4, 2011 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.