Another Plex Chromecast problem thread

Plex Players
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1

Just recently I have found that I cannot cast to my TV from my ipad. I am running Plex server on a WD PR41oo server. I can cast BBC player, or other TV apps, just not Plex. I have the cast icon but when I touch it, there are no devices found.

Was running app version 1195 and just applied the update to 1215. It has made no difference.

But, oddly I can cast from my Android phone, also runnning 1195 at present.

2
3

can try these:

Turn on Local Network access

  • iPad Settings → Plex → Local Network = On.

  • If it was Off before, delete and reinstall Plex to trigger the prompt again.

  • Also check Settings → Privacy & Security → Local Network → allow Plex.

  1. Disable anything that hijacks networking
  • Turn off VPNs, iCloud Private Relay, Cloudflare WARP, AdGuard, NextDNS apps.
  1. Confirm discovery works on iPad

  • Open the Google Home app. Your Chromecast must appear there.

  • Put iPad and Chromecast on the same Wi-Fi name (same SSID).

  • On the Wi-Fi, turn off client/AP isolation.

  1. Plex app cleanup

  • Force-quit Plex, reopen, try again.

  • Sign out of Plex in the app, sign in again.

  • Delete and reinstall the app.

  1. Network knobs that matter

  • Your LAN must allow mDNS: UDP 5353 between iPad and Chromecast.

  • Keep both on 5 GHz Wi-Fi where possible.

  1. About DNS

  • config.claspws.tv can affect starting playback in the new app, not device discovery. Keep it reachable.

  • Allow a DNS rebinding exception for plex.direct on your DNS resolver.

  1. Workarounds that get you going now

  • Use AirPlay from iOS Control Center.

  • Cast from Plex Web on a computer.

  • Use the older Plex iOS app build you have.

  1. Still stuck? Read the Plex Dashboard while casting

  • Plex Web → Status → Dashboard. Check the session:

    • Connection should be Direct.

    • Playback should be Direct Play or Direct Stream.
      If it shows Transcode, lower the cast quality or remux to MP4 to reduce load.

4

Thanks very much for your suggestions. It actually started working again yesterday evening. But I looked at your list:

Items 1-3 yes, all good. Actually the Chromecast is wired, so one less possible point of failure.

  1. Will try thaty if it stops again.
  2. Your LAN must allow mDNS: UDP 5353 between iPad and Chromecast - not sure how Id go about that.
  3. Thats getting a bit above my paygrade now :confused: