Error 0x91d70001

the error message is "it is impossible to read the CD (0x91d70001)"

The error I get is 0x91d70001 not
0x91d7000a?

Hey there Vortex!

Sorry to hear that you're dealing with that peculiar issue trying to play Close Encounters.

I split your post off of the thread that it was originally on so that we can tailor our help to your situation's specific need. If this happened after the recent update, then I would suggest trying the steps on our support page entitled "My
Xbox One game won't start or freezes during gameplay" for the Blu-ray app.

If that doesn't do the trick and still forces you to do that funky workaround, then I would suggest a soft reset of your console.
It's a reset of your console back to factory settings but one that does not uninstall any of your games or apps and is a really good troubleshooting step for most issues.

Just make sure that before you go ahead with it, that you do know all of the sign-in information for any/all of your accounts(asthey
will be removed) and have easy access to your internet network.

Also make sure that you select the option denoted
reset and keep my games and apps.

Follow the steps here on
How to reset your console to factory defaults on Xbox One and let us know how that helps with the issue

Thanks

Hello ,

Thank you for posting on the Xbox forums. We will be locking this thread due to it being revived by a new post. If there are any questions, discussions or issues that anyone would like to bring to our attention, please create a new thread.
We will be more than happy to answer any questions or provide solutions for any issues on your own thread.

Thank you again for posting on Xbox Forums!

I had the exact same error code (0x91d70001) when trying to watch my new "13 Hours: The Secret Soldiers of Benghazi" 4K Blu-ray, no other 4K titles (that I tried) were similarly affected. The method of ejecting the disc, unplugging and then
re-plugging the HDMI cable, before re-inserting the disc did work for me. However, to fix the issue permanently, I discovered that performing a full shutdown down of both the console and TV worked, so whether it was a HDCP issue of some variety is unknown.
Also, the issue with the 4K Blu-ray had persisted for almost a month before I tried the full shutdown, so I wasn't just hitting the issue on a bad day. Your mileage may vary but I hope this can be of help to someone.