Must be gremlins in your rigs, had absolutely no issue with the Odyssey. Plugged it in installed good to go. Also for folks who think their isnt a big difference between this HMD and Rift, lol go to 1.5 pixel density or higher its amazing.
https://answers.microsoft.com/en-us/windows/forum/windows_10-win_mixreal-win_mixinstall/we-couldnt-download-the-windows-mixed-reality/1235839d-3171-4555-8f04-9575e359aead?messageId=559026c1-3115-4df6-b5cf-4bebf1b2b549