Downloads Fail to download remotely

When I instigate a download from a remote network, I see the file move to downloads, can see the transcode occur, it then moves to the downloads section, and fails to download.

Usually you would see a download speed appear, but currently the download bar looks full but no download occurs.

this seems to be remote network specific. Working on some and not others.

Server shows as fully accessible.

Update:

if I were to switch to cellular, and retry download it works.

So perhaps a network issue. I have the Unifi UDM and the only thing that has changed recently is switching to Plusnet full fibre

Plex Media Server: Version 1.43.0.10492
• OS: MacOS 26.3
• Plex Pass: Lifetime
• Clients: iOS 226.2.0
• Downloads started from mobile apps (not web)
• Client is on different LAN as server

plex-log-2026-02-22T15_04_23.588Z.zip (385.9 KB)

Seems its a longer standing issue?

Im out of ideas, but also in parallel checking with Unifi in case there is an issue router side. Not sure if support get involved here?

You marked this as solved. Did you still need help?

Yes please

Downloads is both a client and server issue, so please reproduce the problem and provide both logs.

Plex Media Server.log (124.5 KB)

plex-log-2026-03-13T20_28_32.901Z.zip (61.6 KB)

Plex Crash Uploader.log (594 Bytes)

Plex Tuner Service.log (2.4 KB)

Your app ligs indicate it cannot make a secured connection to your server to perform the download. Your server logs say the certificate couldn’t be loaded. Try turning off PMS, delete the certificate file, restart PMS, try downloading again. It should grab a new certificate. If that doesn’t work, grab a new PMS log so I can check if the certificate worked. If it doesn’t, this may need a moderator to check your account.

After a Google I’m looking in:

/Library/Application Support/Plex Media Server

And can’t see that certificate, is it stored somewhere else?

Dive down into your Plex data folder, then into the subfolder Cache.
The file cert-v2.p12 is the certificate.
(Leave all the other files in there alone.)

Plex Media Server must be stopped when you do this.

Looking In that folder I see codecs, crash reports, diagnostics etc etc

But no Cache folder

Presume the fact that I cannot locate a certificate, that this could be the issue?

On a Mac, the folder you actually want is:
~/Library/Caches/PlexMediaServer
or:
/Users/username/Library/Caches/PlexMediaServer (it’s the same, but ~/ is shorthand for your user folder.)

Oh, the mighty Tilde

Thanks for the clarification.

I deleted the certificate and the same behaviour continues.

Namely, the remote download loads up in the download area on iOS, but fails to start.

Is there anything else I can try to get this to work again?

@OttoKerner I’ve also noted that after remote streaming for a few minutes I get the error:

“unexpected failure before end of file“

Presume this could also be related.

Any further help?

Broader question, am I in the right place for support?