'Unable to browse music' using Sonos with PMS 1.24.1.4931

Server Version#: 1.24.1.4931
Player Version#: Sonos 11.2.10

Just upgraded to 1.24.1.4931 (using official Docker image on Ubuntu) and now having problems browsing music on Sonos. Worked fine with previous version.

Behaviour experienced:

  • Search for artist in Plex source in Sonos
  • Sonos shows artist and album count correctly
  • Click on artist to browse albums, just get error message ‘Unable to browse music’

Expected behaviour:

  • List of albums displayed

Note that if I search for an album directly, I can see its tracks and play it or add to playlists, etc. as expected so it’s only a browsing issue.

The problem persists after removing and reauthorising the account.

Can’t see anything obvious in any logs. Any ideas?

Thanks

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I’m having the same problem. It used to work fine. I’m not sure when the problem started, but it definitely seems to be very recently. Is this a Plex bug? Is there a proper way to bring it to the attention of the developers?

Same for me. Whenever there is a problem with the Sonos integration it rarely gets noticed or fixed automatically (it’s been like this for DAYS), so let’s hope someone from Plex sees this.

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There was a definite immediate correlation with an update of Plex for me. Looking back at my Docker images, it definitely worked with 1.23.4 and I think it worked with 1.24.0 but now 1.24.1 definitely isn’t working

OK, done some further testing and maybe it isn’t related to the PMS version, but the Sonos integration itself - maybe it was just coincidental timing rather than the update itself. Tried rolling back and encountered the same issue with the 1.23 version that previously worked.
Interestingly, if you browse from the top level ‘by artist’ I can see the list of albums as expected - it’s only if you do an artist search that it doesn’t work.

I don’t believe I applied any Sonos updates but it’s not easily possible to change versions so I can’t test that end.

I have the same issue.

A second symptom is the Sonos app is losing all of my Plex audio sources, except Podcasts for some reason… When I select “Other Sources”, the various music libraries come and go. Has been happening for about 1 month. Are you also seeing this second symptom?

I don’t really use that view so couldn’t tell you the normal behaviour I’m afraid. Here’s what I see there though; just podcasts and my main music collection (I only have this music source configured). It’s greyed out though and I can’t select it.

Screenshot 2021-09-09 at 07.34.03

It’s grayed out because that’s the source you have already selected. If you select “Podcasts” and go back to the “Other Sources” view then “Podcasts” should be grayed out and the other one selectable.

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I’ve got the same issue - do a search for artist - their albums show up, but I’m unable to browse their albums to select one to play.

It has been happening for a couple weeks now.

This problem persists with my laptop sonos controller or cell phone.

I don’t have problem with PlexAmp - not sure if that is helpful…

Same issue.

I can browse Plex using the service via in Sonos (select music symbol > Plex > By Album) and I am able to view and playback music just fine.

If I use the search function in Sonos, I cannot browse anything (artists, albums, play lists, etc)

Sounds like a lot of similar symptoms. Do we have anything in common? It’s hard to know what to suggest… But for example, I rely on the Plex relay service for remote access rather than configuring inbound firewall rules; perhaps the Sonos integration requires more reliable remote access?

Just found this topic, and I have the same issue. Search works fine but then I can’t browse anything, and I get the `unable to browse’ message. Removing Plex from Sonos and re-adding it doesn’t help. This has worked fine in the past, with just port 32400 forwarded in my router.
Running the latest Plexpass version on Synology.

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Discovered a similar error message in a previous forum post that suggests your router needs to support NAT Loopback (sometimes called hairpinning).

I’m running a Ubiquiti Amplifi HD router (at version 3.6.1) which I believe does it. Any correlation with anyone else’s router model?

I have an Asus RT-AX88U, but it’s a bit unclear whether it supports hair pinning or not. Some posts suggest it’s always on, some say it’s missing.
That said, this used to work fine until a few Plex server releases ago.

I’ve just done a test from inside my network using curl.

  • curl 192.168.x.x:32400
    <html><head><script>window.location = window.location.href.match(/(^.+\/)[^\/]*$/)[1] + 'web/index.html';</script><title>Unauthorized</title></head><body><h1>401 Unauthorized</h1></body></html>
  • curl [external IP]:32400
    <html><head><script>window.location = window.location.href.match(/(^.+\/)[^\/]*$/)[1] + 'web/index.html';</script><title>Unauthorized</title></head><body><h1>401 Unauthorized</h1></body></html>

Don’t care about the ‘Unauthorised’ response in this context, but to me this implies that NAT loopback is working correctly on my network. Same effect in a web browser too - both internal and external IPs lead to the Plex login page, so it’s accessible.

I’m getting the same responses back when I test using curl so I reckon my router is ok. Given that it’s worked before, I don’t think it’s an issue with my network anyway, but something on the Plex side.

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I don’t believe this is router related.

I have only had my Sonos Arc for 6 weeks. For the first two everything worked fine. The past 4 weeks I have been having this issue and I have made no changes to my network.

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Hi, I got the exact same issue since several weeks. Works fine when I go through the menu but shows “Unable to browse music” when I search for an artist and click on it.

Same with me here. Running plex on docker / synology. Serveral Sonos speakers in setup. Library browse and play works flawless from Sonos app - search function buggy as described above.

Hi, same problem for me for about two weeks. Searching artists in Sonos App shows all albums of this artist but cannot see the tracks then (message: Unable to browse music). Searching an album and then playing songs works without problem. The problem persists on severals iPhones and Macs. Using the Plex-application works without any problems. No idea, how to solve it.