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

Used Sonos this morning. Came back this evening. No connection. Trying to set up a new connection since it won't recognize the old one...no dice.
Do I have to have an additional Ethernet cable to plug into the sonos

Used Sonos this morning. Came back this evening. No connection. Trying to set up a new connection since it won't recognize the old one...no dice.
Having the same issue and cannot fix it

Used Sonos this morning. Came back this evening. No connection. Trying to set up a new connection since it won't recognize the old one...no dice.
I have the same problem lately.  Last nite, nothing could connect. So, I restarted the whole thing from scratch -- new.  Worked great all day. Now this evening, nothing.  No Macs, no PCs and no iPhones or iPads can find our Sonos boxes.  We have like 7 and now nothing?  What's up?

Used Sonos this morning. Came back this evening. No connection. Trying to set up a new connection since it won't recognize the old one...no dice.
Same thing is happening to me. The system has worked flawlessly for 6 months and now, for apparently no reason, none of my devices seems to recognize the sonos speakers. Could it be because I have subscribed to Apple music recently?

What shall I do?

Massi  

Used Sonos this morning. Came back this evening. No connection. Trying to set up a new connection since it won't recognize the old one...no dice.
Unplugging the BRIDGE seems to work tonite when it got funky. Why mostly at night?

Used Sonos this morning. Came back this evening. No connection. Trying to set up a new connection since it won't recognize the old one...no dice.
When you're having trouble connecting, what error message do you see? Is it that you don't have any rooms that can play music or do you see a Sonos system not found?

There could be a number of things that might occur at night which could cause this sort of issue, a good example would be a neighbor turning on their baby monitor which runs on the same frequency as most wireless devices (2.4 GHz). This is simply an example though, it's hard to say without more information.

Do you mind sending a diagnostic from the system when you have a chance? Though you can't do this if the whole system is missing, you can do it if you just see the BRIDGE or when it's back up. It'll still contain some good information for us to start with.

It's started happening to me every morning with my Sonos Amp. It can't be found on my laptop or phone but if I reboot the Amp it works. Every morning it is the same for the last week or so.

Has something changed in a recent update or something?

Sounds like a IP address issue.  I would unplug, reboot your router, and then plug back in to get a fresh IP address.

Diagnostics sent: 4724891.

Used Sonos this morning. Came back this evening. No connection. Trying to set up a new connection since it won't recognize the old one...no dice.
Thanks, quite the network setup there. It looks like you might have a wireless network broadcasting on each of the main channels, 1, 6, and 11 (based on SSIDs and strength of the signals). Several of your Sonos players are having trouble connecting through the interference as they're set to channel 6 presently.

Would you be able to clear off one of those three channels so that you can set Sonos to it alone?