ERROR - The server "PlexMediaServer" does not have a valid connection for casting. Check that the server is claimed in server settings

Plex Media Server Desktops & Laptops
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Server Version#: Version 1.14.1.5488
Player Version#: Chromecast Ultra via ethernet

The server “PlexMediaServer” does not have a valid connection for casting. Check that the server is claimed in server settings.

Expected to play video on Chromecast.

Actually received the error message.

The Plex logo is on Chromecast. Says ready to cast. It never does. Playing from Chrome Version 72.0.3626.81 (Official Build) (64-bit).

Video plays fine in the browser. Otherwise, the Chromescast is also fine.

Plex Server is on Linux. Chrome is also on linux.

Please advise how to proceed.

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  1. Please verify DEBUG logging is ON, VERBOSE logging OFF
  2. Please recreate the error
  3. Wait 30 seconds
  4. Settings - Server - Troublehooting - Download Logs
  5. Attach the ZIP file it presents you
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Plex Media Server Logs_2019-02-06_21-00-31.zip (6.2 MB)

The logs are attached. Thank you.

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Thank you.

Your logs show me that the cast was initiated then the device closed the connection .

Feb 06, 2019 21:00:28.889 [0x7f44673ff700] DEBUG - PlayQueue: Client xput35gnttk8im1ufashp0nr requested ownership of play queue 36, but already had it.
Feb 06, 2019 21:00:28.891 [0x7f44673ff700] DEBUG - We're going to try to auto-select an audio stream for account 1.
Feb 06, 2019 21:00:28.891 [0x7f44673ff700] DEBUG - Selecting best audio stream for part ID 22257 (autoselect: 0 language: en)
Feb 06, 2019 21:00:28.891 [0x7f44673ff700] DEBUG - Audio Stream: 9967, Subtitle Stream: -1
Feb 06, 2019 21:00:28.893 [0x7f4472bff700] DEBUG - WebSocket: client initiated close
Feb 06, 2019 21:00:28.894 [0x7f4472bff700] DEBUG - NotificationStream: Removing because of close
Feb 06, 2019 21:00:28.894 [0x7f44723fe700] DEBUG - Completed: [10.0.0.104:33098] 200 GET /playQueues/36?repeat=0&own=1&includeChapters=1&includeGeolocation=1 (9 live) TLS GZIP 16ms 3394 bytes (pipelined: 210)
Feb 06, 2019 21:00:28.900 [0x7f4472bff700] DEBUG - handleStreamRead code 2: End of file
Feb 06, 2019 21:00:28.900 [0x7f4472bff700] WARN - LongPoll: Got error, closing.
Feb 06, 2019 21:00:28.900 [0x7f4472bff700] DEBUG - Failed to stream media, client probably disconnected after 77398016 bytes: 104 - Connection reset by peer
Feb 06, 2019 21:00:28.901 [0x7f4472bff700] DEBUG - Completed: [10.0.0.104:59166] 200 GET /library/parts/24115/1549410424/file.mp4 (9 live) TLS 4971505ms 77398016 bytes (pipelined: 1) (range: bytes=0-)

Have you attempted to restart it?

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Yes, I restarted it just now and the same thing happened.

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Is your server claimed (signed into)? DNS rebinding could also cause that I think

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I signed in with my Plex pass account. And it enabled the premium features a few days ago.

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Is there anything else should try?

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Is there another update to chrome on linux?

This shows the latest for linux should be 72.0.3626.97

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I’ve made a little progress on my own. I can now play on chromecast by changing the settings > network > secure connections > disabled. It was set to preferred. The must be a problem with Plex detecting that TLS isn’t working with Chromecast.

I was expecting more assistance from Plex, being a Plex Pass member.

I’m still looking for more details on exactly why this isn’t working.

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There is this thread, which was why I thought about checking that Chrome is the latest version:

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If is is working with secure connections turned off then it is likely DNS rebinding as I mentioned earlier. I don’t have your router manual to tell you how to disable that if it has it. You can try adding Google DNS to your router instead of whatever your ISP uses.

more basic info on DNS rebinding can be found here https://support.plex.tv/articles/206225077-how-to-use-secure-server-connections/#toc-4

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