Why some iOS device can't connect?

Plex Media Server Desktops & Laptops
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Server Version#: 1.24.4.5081
Player Version#: 6.7.2 (iOS)
iOS Version#: 9.3.6 (iPad 3)

Everything worked last week.
Now I get TSL errors (below) from some devices this week.
I’m only using local access (no remote).

...
Oct 21, 2021 09:42:36.410 [0x70000b34e000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50062: stream truncated
Oct 21, 2021 09:42:36.437 [0x70000b34e000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50075: stream truncated
Oct 21, 2021 09:42:36.438 [0x70000b34e000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50073: stream truncated
Oct 21, 2021 09:42:36.464 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50061: stream truncated
Oct 21, 2021 09:42:36.513 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50072: stream truncated
Oct 21, 2021 09:42:36.516 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50071: stream truncated
Oct 21, 2021 09:42:36.528 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50070: stream truncated
Oct 21, 2021 09:42:36.655 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50067: stream truncated
Oct 21, 2021 09:42:45.833 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50142: stream truncated
Oct 21, 2021 09:42:46.018 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50137: stream truncated
Oct 21, 2021 09:42:46.245 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50138: stream truncated
Oct 21, 2021 09:42:46.352 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50141: stream truncated
Oct 21, 2021 09:42:46.590 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50139: stream truncated
Oct 21, 2021 09:42:46.646 [0x70000b3d1000] Debug — CERT: incomplete TLS handshake from [::ffff:192.168.3.131]:50144: stream truncated
...

Is there any network setup thing (or similar) I can do to fix these connections?

3

Certificates expire at some point and Plex had to roll out valid certificates earlier this year. Apple no longer updates the root certificates for those outdated versions of iOS therefore you’re now in the situation that your Plex client can no longer establish a secure connection to your server. Sadly there’s nothing Plex can do for those no-longer-supported devices (keep in mind both your OS and app versions are quite dated).

Your only option is to configure your server to completely disable all secure connections (Settings > [Server Name] > Network)

1 Like
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@flow @tom80H Thanks both, with “Disabled” secure connections it works fine!
Such a great use for these retired devices.

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As long as you keep in mind that this uses insecure connections for ALL communication between clients and your server

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@tom80H Sure, it is a local-only setup (no remote access), so I guess opting-out encryption makes sense anyway.

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