I have the same issue. My Dragonfly Cobalt does not show anymore as a playable device in many Windows computers. Device works normally playing windows sounds, Spotify, Qobuz or anything. It is just not recognized by Roon anymore.
Roon Remote: Version 2.0 (build 1143)
Roon Optimized Core Kit NUC: Version 2.0 (build 1143)
Windows 10 Home
Version: 22H2
OS Build: 190452130
Experience: Windows Feature Experience Pack 120.2212.4170.0
Please accept my apologies for the long delay in responding. I’ve split your post into a new topic thread, as the old topic thread was a year old and irrelevant to Roon 2.0.
I recommend you take these steps to see if the Cobalt reappears:
Create a Backup of your current Roon database. This is essential retain custom DSP settings, playlists, etc. in your library.
Use case is trying to listen on a Windows PC running Room remote.
I have a server running on a NUC RoonRock.
It was working before, but it doesn’t anymore.
I will try the firewall option, but it seems unlikely because other softwares running on the same PC as Qobuz and Spotify can recognize the Dragonfly Cobalt.
Can you please share a screenshot of your available Zones in Roon → Settings → Audio?
I’m assuming this USB DAC is visible in your Windows System audio settings since it plays back system output?
Also, do you have any additional audio drivers installed on this Windows device beyond ASIO/Wasapi? I’d make sure those are up to date, just in case.
Since it appears you’ve run RoonBridge on this same Windows device at some point, it might be helpful to perform the following to refresh conditions more broadly in your system.
First, create a Backup of your Roon database to retain custom DSP settings and other customization.