Our Sonos system comprises four Sonos:Play1s, a Sonos:Play3 and a Sonos Soundbar. They have all worked fine for nearly 4 years. Now everytime my wife and I try to connect via our Android and iOS Sonos2 apps the system cannot be found. We've followed all advice through the app, managing to temporarily reconnect Sonos to our home WiFi network only for it to fail again and lose connection a couple if hours later.

Every other device in the home runs fine off our WiFi. There have been no updates to our WiFi network or router and we have submitted multiple diagnostic reports without reply.

Now at a loss with what to do and finding the situation and lack of support incredibly bad for the amount of money spent over the years in Sonos products. 

Please help. 

Here is the confirmation number for one of our recent diagnostic reports: 870734868

Are you able to connect any of your Sonos speakers directly to your router with an ethernet cable?

Are you perhaps using the BT Smart Hub 2 router by any chance? There are some reports that a recent firmware update to that router has been causing issues with 2.4Ghz/5Ghz WiFi isolation, which could account for what you are seeing with your Sonos devices.

If so, then perhaps try disabling the 5Ghz WiFi band and see if that fixes your issue. If not, then perhaps ignore my post here.

edit: also see this thread.

I’ve had this problem and it now seems to be resolved

ive just upgraded to S2 because I’ve just got a Roam..

I wanted to then set up a separate S1 system for my play 5 gen1

on completing, one minute it would work then the next minute it wouldn’t.. roam and move would disappear on some iOS devices but be visible on others..

anyway did as suggested and spoke to BT.. They said they have made some changes and I would have to now reboot the smart hub 2.. they didn’t actually say what they have done..?

Anyway all is working as it should do at the moment just to confirm during this process I’ve not touched any of the speakers.. hub was just rebooted and once it came on I opened both apps and all was as it should be

I am so glad I found this on here otherwise I’d still be messing about now trying all sorts of different things!

all is ok come morning

I’m a full sufferer of this issue.. whole system not appearing in the S2 app on 14.4.2 iOS. Disabling 5ghz works fine and all speakers available.. but streaming services on TV downgrade to very low bitrate over 2.4ghz so not workable.

Have hardwired a Play:1 but my Move won’t appear (assume it must be on 2.4 and not sonosnet and my phone is on 5).

Let’s hope BT get this sorted! I’ll be ringing and seeing if they can roll my firmware back.

Sorry to hear of your problems.. have you been in touch with Sonos and sent a diag report to them? If not I would… could be something simple!

All is still working perfectly for me this morning.. and like I’ve said above I touched nothing on my system.. chatted to BT… who reset the hub (as it went back to original factory settings) it interestingly uses the same firmware as mentioned! Once the hub was back on, I changed my network Id and password to what we use here at home so all would connect (tv, iPad, phones etc) and a few minutes later all was good

hope you get it all sorted

Thanks Nick.. man I was hoping against a whole router factory restore I’ve got SmartHome devices coming out my ears and I think even if I change the SSID back to what it was, everything will need set up again from scratch… there goes my weekend :-D

How have you got on?

I take it you updated to s2 FROM the s1 app? And it asked you to remove the s1 only speakers?

G’day; at the moment my Move has appeared back in the system list with everything else (somehow.. no idea why as it’s on 5ghz with my phone whilst everything else is on 2.4.. so this problem is full whacky!)..

Since all is currently well, I’m going to wait it out until it drops or something else ends up happening before I go with the nuclear option of completely resetting everything/calling BT.

I did upgrade to S2 from S1 when it launched.. all my kit is S2 compatible.. well; except for a bridge that I wasn’t using anyway!

I’m hoping that, since ‘BT know about this and are working on a fix’, they will release a further router firmware update that will solve the issue completely.

I also have a Hue Sync box that is too suffering from the issue of 5ghz controllers not reaching it on the 2.4ghz band.

This issue has garbaged my Sonos for weeks- extremely disappointing. It can only have been caused by a Sonos app update. How can Sonos blame BT?! 

I finally solved it by turning off Smart Setup on the Home Hub then resetting it. This keeps 5gz.

So you made no change to the Sonos environment, did make a change to the BT one, fixed the problem that way, but still want to blame Sonos? Even though lots of BT Smart Hub users have an issue that isn’t affecting users of other routers? 

Hey; I am also having the same issue with a Hue Sync Box on 2.4ghz that I can’t reach with the controller from 5ghz.. so I’m pretty comfortable that this is a BT issue.

It also started happening around 2nd week of April which is exactly when my Smart Hub 2 firmware was updated by BT..

Suffering this issue myself and its getting pretty frustrating. 

Have a mixed bag of a system here. 

2 Sonos One 

2 Ikea Symfonsik 

2 Amazon Echo Dots 

A couple of weeks back the Symfonisk’s became very hit and miss. Would fail to connect via Airplay and would just disappear from the Sonos App. 

The Sonos One’s would work fine during this period so assumed maybe the Symfonisks were failing. However the Echo Dots I discovered could happily control the Symfonisks regardless of whether they were showing in the Sonos App/Airplay so they were working but for whatever reason the Sonos App was ‘losing’ them. 

This was all happening on the older BT Home Hub 2 and right up until that point a few weeks back I had experienced no real issues.  

Anyway I Have recently changed to the Full Fibre BT package and that comes with the BT Smart Hub 2. 

The fun and games that people are experiencing have taken full effect. 

Spent hours trying to get the Sonos/Ikea connected to the network. When they connected it was short lived. I have done everything that the numerous threads have suggested but still having issues. 

The Echo Dots worked instantly and in minutes and have worked perfectly since and can also still control (either via voice control or using the Alexa App) the Sonos/Ikea speakers regardless of what the Sonos App/Airplay are doing. 

To me it seems disingenuous to put this squarely on BT although it may be the case but for me my issues have existed prior to the Smart Hub 2 ‘upgrade’ so lead me to believe that a recent Sonos App update is also causing issues. 

Hope something gets sorted soon as currently I have £600 worth of speakers sat largely useless whilst the cheap as chips Echo Dots work flawlessly. 

Add me to the list of people having trouble with this BT update.

I’m not a Sonos user, but I started having difficulty playing media over DLNA on my PS4 in early April. I switched to a spare Chromecast which was equally problematic. I then realised it was all related to how 2.4ghz devices interacted with 5ghz devices, and here we are. I made a thread on the BT forum, and then found this one.

Let’s hope they get this sorted.

Thanks for sharing.. good to know the wider impacts beyond just Sonos use

Hi, just disabled the 5Ghz connection and now all of my Sonos equipment connected straight away with the app. Thanks for the info as I’ve been pulling my hair out trying to sort this out.

Hi there,

This month I switched from Sky to BT and I have since had issues updating my WiFi password in the Sonos 2 app.  

The Beam itself has connected to the internet as Alexa is working, for example, but the app keeps stating that the Beam isn’t connected to the internet and it won’t accept my password.  As a result, I can’t access my account details on the App (it is greyed out) and I can’t Airplay music to it either.

I have tried deleting the app, turning off the Beam, etc, to no avail.

Do you think this issue is related to the problem reported on this thread (as I have the Smart Hub 2 router), or something else?

Thank you,

Simon 

Hi,

My sonos has been working fine since day 1, but suddenly this week every time we go to use it the app cant find the system and the only way to fix it is to reboot the router - not only is this really painful, but I shouldnt need to - any ideas on how to fix?

Sounds like it Simon.. have you tried disabling the 5ghz band from the routers’ home/admin page? http://192.168.1.254.. the fact that the Beam can play internet streamed content/connect to Alexa but you can’t manage it from the controller app sounds like it would be related to this issue.

Works reliably as a fix/proof point for me.. but I can’t keep the 5ghz band off as then my tv streaming services drop to potato-cam resolution.. this needs a proper permanent fix between BT/Sonos

Thank you.

I have checked that page and under the ‘2.4Ghz’ - Sonos ZP is listed - I presume that is the Beam?

If I turn off the 5.Ghz, do you think it will effect the internet connections to my other devices?

Thanks again

This is very interesting a good to know as I’ve been pulling my hair out for the last few weeks.

I have 2 x Play1, 1 x OneSL, 1 x Beam and 1 x Boost

Ive been having connectivity issues and a couple of weeks ago we couldn’t connect at all.

Today I have unplugged my Boost and hardwire the Beam instead - all seems to be working again. Not ideal though as the Boost is new

is this only an issue with the Smart Hub 2 as we’re thinking of moving over to Virgin anyway, so hoping the issue will resolve itself?

I’ve heard it’s only a BT issue with users with SmartHub 2, firmware update on 10th April is buggy and isolating devices on 5ghz communicating with devices on 2.4ghz.

From my perspective and for what it’s worth, I can  confidently say this is a BT router firmware issue as I was fine before 10th April, and now my Sonos system (which is all on the 2.4ghz with exception of a 5ghz Move) can’t connect to my phone/controller when it’s on the 5ghz band.

Furthermore, I have a Hue Sync Box on the 2.4ghz that my Hue Sync app also can’t reach.

As soon as I turn the 5ghz band off.. boom.. all works perfectly.

I have to have 5ghz on though as bandwidth is too limited on 2.4ghz. I’ve Ethernet-connected a Play:1 in to the router, that allows me to have 5ghz on as ‘sonosnet’ doesn’t care about 2.4 versus 5.. but means I can only intermittently reach my Sonos Move.

Fingers crossed for a router firmware update from BT.

Hi @skg21,

What kind of router do you have? Is it a BT Smart Hub 2? If so, have a read of this article and let me know how you get on.