The team is working on resolving the “Unable to Verify Game Ownership” error on Minecraft Dungeons on Windows. If you’ve purchased the game, we thank you for your patience as we work on a fix.
Do the online characters have to social distance on the servers and that is causing this to fail? You had a long beta. Rollback your recent changes and deploy more Azure verification servers. No reason to be hitting this in PROD. It's Minecraft, you knew this was coming ;)