windows app can't find system

Thanks. Contacting support was the next step.

uBlock Origin, Malwarebytes, windows firewall (configured Properly) disabled all, no effect. I don’t see why any of what you mention would stop sonos on my network

One thing I would check is whether both Windows machines are on the exact same network as the speakers, not a guest network or a different band. I have seen the Windows app lose the system that way while the phone app kept working fine, because the phone was on the main network and the PC had jumped to the guest one. It is worth a quick check before you spend time on support.

guest network is off, sonos is on 2.4G,,, tried pc on 2..4 and 5g, no go. android on 5G connects.

​@wyrwulf, Simply disabling Ublock Origin & Malwarebytes is often not enough. Test this by uninstalling the blockers and then restarting Windows. Does the Windows controller detect the Sonos system afterward? If it does, you can go ahead and reinstall the blockers.

The problem is either a sonos app update or a windows update the rest of the system is the same as it was the last time sonos worked on the pc

thanks everyone for trying to help

Your local network likely flipped to “public” after an update, it needs to be “private” for Sonos to work. My Sonos apps for Windows actually call out this specific situation, but the official apps just fail to find any devices.