User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.124 Safari/537.36 Steps to reproduce: I have started RTCPeerConnection with Chrome and Firefox browser with data channel. After that, I want to share the screen from Firefox to Chrome. Reverse is working fine from Chrome to FireFox. Actual results: I am facing issue while setRemoteDescription. It gives me below error message. ICE restart is unsupported at this time (new remote description changes either the ice-ufrag or ice-pwd)ice-ufrag (old): ZVcCdknrixIC46+vice-ufrag (new): CVsETyIt4H/G9u2Zice-pwd (old): 80Ph2snObUYTT/KVEQlMzKq5ice-pwd (new): FwK/2isksghHvZfZLqsy3oLI Expected results: It should not throw any error and work fine

We are working to add ICE restart to Firefox this quarter (Firefox 46 or earlier). See Bug 906986 for more details and to track the work.