Trying to get my amazon prime music account to stream on my xbox. I need adobe flash player. ...

There is no loophole, sorry. You cannot download programs to the console. You can only download apps and games that have been specifically designed for the console.

My thinking is that Microsoft will not allow a prime music app as it would be in direct competition with their own music service. I thought I has a workaround - using internet explorer to access amazon and amazon prime music. It seemed like it worked...once.
Next time I tried, there was a required flash upgrade but there was no update available for xbox one internet explorer. Microsoft seems to have blocked that workaround as well. I don't see any way to suggest new apps on xbox support or on amazon support.
Any ideas?

I'm glad the thing doesn't have flash player. Don't have to look at all the dang ads running across the screen that's in flash. MS doesn't make Flash, Adobe does. Adobe has pulled support from Mobile devices. The PS3 hasn't had an update to its flash
player in years, and won't according to Adobe. They are focusing more on PCs and Macs with regards to Flash. So no amount of complaining to MS is going to resolve it. You'll need to make your voice heard at Adobe.

adobe stopped making flash player available for consoles and phones. has nothing to do with xbox. no console has flash player on their web browser because flash player for consoles doesn't exist. you can hope all you want but it's never going to happen.
blame adobe not xbox.

@TrashCanElite

Flash player is not a microsoft platform. It's made by Adobe.

Adobe have already abandoned flash on Linux, playstation, android and others so the chance of it coming to xbox are non existant.