Background Information

When launching a server or an instance, the server won't launch and always resulted in an error. You get a red banner showing the following error

400: AuthFailure: Not authorized for images:.....

not_authorized_for_images.png


Answer

Basically this is an error coming from the cloud stating that you can't use the image because it is no longer publicly available. Cloud providers are known to deprecate images overtime and this is usually expected. If you click the link beside the Image, you will see that the image state is deregistered.

image_deregistered.png

In this case, the solution is to update the MCI and use a different image.