Google Cloud Messaging inside Knox. How to receive a message?
<p>I have a big problem with receiving a message from GCM inside Knox by my app. The same app outside of the Knox receives messages without any problem. The same app registers to the GCM outside as well inside. Why the GCM doesn't work inside Knox? What has to be done to receive the GCM message inside Knox?</p>

<pre><code>Device: Samsung S5
Samsung Knox version: 2.3
Google Play Services: 8.4.89
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