I have the same problem on a 2017 27" iMac and a 2015 MacBook Pro.
With the System Preferences App I get the message "No available updates found. Please try again later." I got a similar message from the command line, "No updates are available."
I'm still doing some testing, but what seemed to work on the MBP is removing the Beta profile, and installing the Beta profile for 10.16 beta 2.
sdmarcotte
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for