"Your Sonos System Not Found" after it was already connected and playing

same problem here

it worked fine for a year or so - a few months back - nothing

playbar on wired
play 1 on wifi
connect on wired

i have a tp link extender and now nothing

I'm out of my depth too. We used to be able to bring a laptop upstairs in our company and it would find our Sonos system without a hitch. We'd play music and then leave again. Last week we tried to use the sonos again, and it didn't do anything. Sonos system not found. I try to add an existing sonos system to my controller and it finds it. Great! But then I get the 'Sonos system not found' alert in my controller right after.

I have no clue what to do... tried setting it up with a router, just to see if it would work. Guess what: I was able to see it in my controller and then immediately after it was gone again as soon as I configured the wireless setup. I don't know what I'm doing wrong? We've added signal broadcasters in our building to have better conneciton with our cellphones, but I'm not suer this is actually the problem? I'm not familiar with Sonos, so I don't know how else I can fix this?

I have had the same problem.
Three different Android controllers would repeatedly show "system not found" message even while using the system they would sometimes loose the connection.
What I noticed was that the PC app (PC is wired to the same router one Play 1 is wired to) never had problems finding any of my components, so the Sonosnet had to be working.
I then found that Sonosnet and my wifi were both using channel 6. So I changed Sonosnet to channel 11 and set the wifi to channel 6, this seems to have fixed the problem, as I have had no dropped connections since then.

Good suggestion ThomasBroch. This page has some great suggestions and a guided assistance to follow. Let us know if you still need a hand.

Thank you Ryan S, I had already seen the page you mention, however it unfortunately does not mention the possibility of wifi interference between SonosNet and other wifi. I did notice many complaints regarding this issue on Google Play and originally discounted it as an app problem, until I came upon the solution.

I've recently had connectivity issues with my Sonos system. Constantly getting the "system not found" error. Tried everything that was suggested with no success. Turned off the guest network on my router & bingo!.....no more issues so thought it was worth a mention.

Im not saying this would work for you but it did for me ..... I had constant not connecting issues and drop outs almost the point where I was about to put my sonos speakers on ebay.

However ..... I got an app called "wi fi explorer" for the mac ..don't know if it is available for windows it gave a pictorial view of wi fi channels in my location ( houses all around ) changed from channel 11 to 6 which was less crowded and no overlaps.

Not had one dropout or connection failure in 14 days.

Sonos is on BBC radio 2 about 10 hours a day.

When I go into settings - advanced settings and tap wireless setup I just see instructions on setting up a wireless network, there is no reset option. There is an option further down to reset controller but I don't think that's what's being referred to here. How do I get the reset option?
Thanks.

When I go into settings - advanced settings and tap wireless setup I just see instructions on setting up a wireless network, there is no reset option. There is an option further down to reset controller but I don't think that's what's being referred to here. How do I get the reset option?
Thanks.

I think what you are referring to is when you reset your WHOLE wi-fi network. See below:-

Switch off your Wi-Fi Router
Switch off ALL your Sonos kit
Switch off ALL devices connected to your Network
- Computers, Laptops, Tablets
- Smartphones, thick phones
- NAS

Switch on Router. Wait until it has re-connecte to the internet
Switch on Sonos Bridge and/or Boost, Connect - Wait a minute or two for them to connect
Switch on your Sonos Plays and Playbar
Switch on all your other network devices


Also, as the above post make sure that your SonosNet is on a different channel to your wi-fi and make sure the device connected to the router via cable is as far away from the router as possible.

If all this fails then submit a diagnostic and post here or phone Sonos with it.

Thanks for that Stuart, appreciated.