The ms-client-diagnostics header for application sharing scenario is not correctly formatted in Skype for Business Server 2015

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Skype for Business Server 2015 More...Less

Symptoms

The ms-client-diagnostics header that's used to troubleshoot application sharing issue is not correctly formatted.

This issue occurs because the incorrect type is put in the MediaType filed in a diagnostic blob that is added to the ms-client-diagnostic.

To fix this issue, install the May 2017 cumulative update 6.0.9319.281 for Skype for Business Server 2015, Conferencing Server.