Cannot Authorise your Console for Dev mode Error: 0x8015963D

Hi Tom P! I hope you are well, delighted to be able to offer you my help!

I'm sorry you're going through this situation, I hope I can brighten your day by helping you solve it.

What you can do is the following through the hidden developer settings menu. Go to Settings > System > Console Info > Press LB RB LT RT > Developer Settings > Developer Mode.

Let me know if this solves the problem, good luck!

Best regards,
Daniel.

Hi there

I don't think you can on the console game to be honest. Dev mode of the game was taking off console games to my recollection cannot find anything about switching to dev mode on console.

It is entirely possible they sold it because they could not get it out of dev mode. In dev mode you cannot play games on the console

Deactivate your console using the Dev Mode Activation app

The preferred method of deactivating Developer Mode on your console is to use the
Dev Mode Activation app.

1. Navigate to Games & apps > App
   
2. Open the Dev Mode Activation app.
   
3. Select Deactivate.
   

OR

Switch to Retail Mode

First, return your Xbox One console to Retail Mode.

1. Open Dev Home.
   
2. Select Leave Dev Mode. Your console will restart in Retail Mode.
   

OR Reset your console

You can also deactivate Developer Mode by resetting your console.

Note

When you reset your console, all local save game data will be lost.

To reset your console perform the following steps:

1. Go to My games & apps.
   
2. Select Apps, and then select
   Settings.
   
3. Go to System in the left pane, and then select
   Console info in the right pane.
   

4. Select Reset console.

you cannot run legitimate Xbox programs under dev mode

As a reminder, dev mode is only for creating your own personal software, and in no way is to be used for software piracy or any other purpose or your risk hardware and account bans.

Here you go:

How to activate Dev Mode on your Xbox One console