After updating to build 1244 ARC lost the ability to connect to my Roon core. prior to the update arc had no problem connecting to the core. My internet setup is basically an Xfinity router creating one wireless network, and I have an Eero mesh network creating a second wireless network. UPnP was set up fine on the eero network. I decided to check the Xfinity router and logged into it via the admin tool. There I discovered that UPnP was enabled but a setting called “zero config“ was disabled. I enabled that settings, and arc was instantly connecting to the core. Just providing this info in case it may help others.
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