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Call transfer from a PSTN call to a federated user fails in Skype for Business Server 2015

Symptoms

In Microsoft Skype for Business Server 2015, User A sets Call Transferring to a federated user who is in a different Skype for Business online domain or Skype for Business Server environment. When User B, a PSTN caller, calls user A, and if user A transfers to a federated contact, the call does not transfer. Additionally, a “400 - Malformed Edge Proxy header” error message is logged in the Skype for Business client log.
Resolution
To fix this issue, install the March 2016 cumulative update 6.0.9319.235 for Skype for Business Server 2015, Front End server and Edge server.
Properties

Article ID: 3141120 - Last Review: 03/23/2016 03:21:00 - Revision: 1.0

Skype for Business Server 2015

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