Plex server keeps crashing

Plex Media Server
1

Server Version#: 1.19.4.2902
Player Version#: N/A
Windows version: Windows 10 Pro

Hi,
During the last few days my plex started crashing constantly - it runs for perhaps 5 min at a time now :frowning:
It even crashes if there are no clients connected…
Windows logs does not show anything useful, and when checking plex logs, i’m noget getting any wiser…
with errors like:
Jun 06, 2020 20:14:24.272 [10492] ERROR - Unable to lock named mutex 9334581e-7251-4ef7-a8ec-5bfe8e89ff68: 0x80
Jun 06, 2020 20:14:24.272 [10492] DEBUG - Stopping UPNP server

I hope that there is someone that can help as I have tried a repair/reinstall

Plex Media Server Logs_2020-06-06_20-19-23.zip (231.4 KB)

thanks in advance
/fido-dk

2

Jun 06, 2020 20:19:18.146 [9408] ERROR - Error parsing allowedNetworks '': Der blev angivet et ugyldigt argument

Check your settings in Server Settings -> Network. Make sure you’re using the correct syntax. If you’re listing more than one network, do not add a space between them.

Not sure if that is causing the crash, but it should be corrected.

3

Hi FordGuy61

I only have one network in “Lan networks”, but i will try and leave it blank and see if it helps.

/Fido-dk

4

Still crashes, new logs if needed
Plex Media Server Logs_2020-06-06_20-48-15.zip (183.5 KB)

5

It appears to be an issue with hardware accelerated transcoding. This is some of the last output in your logs before the crash:

Jun 06, 2020 20:46:55.266 [11024] DEBUG - Codecs: testing h264_qsv (encoder)
Jun 06, 2020 20:46:55.266 [11024] DEBUG - Codecs: hardware transcoding: testing API qsv

It’s testing Intel Quick Sync Video to see if it’s available. Chances are, if you see this immediately before a crash, that’s the cause. To see if this is the case here, try disabling hardware accelerated transcoding. Uncheck:
Settings -> Transcoder -> Use hardware accelerated transcoding when available

If the server stops crashing, check your Intel video drivers. There are certain versions which are known to cause issues. This post from @sa2000 has a summary:

1 Like
6

Hi philipsw

After turning off hardware accelerated transcoding my plex looks to have stopped crashing :smiley:
I will keep monitoring the system if it is not the root cause.
Intel drivers have also been updated just in case.

Thanks for the help and I will confirm is the server runs as expected for the next day or so.

/Fido-dk

7

Hi again
GFX driver did the trick, after disabling hardware acceleration the server was abel to stay running, updated the GFX drivers and now everything is back to normal :slight_smile:

Thanks for the help, its VERY appriciated

/Fido-dk

2 Likes
8

No problem, glad it’s working again.

9

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