According to MS Support, PSO 2 NG Isn't letting me install it due to an issue that's caused...

Unfortunately, PSO isn't backwards compatible with Xbox 360.

Hi there. The "Content is installed. Insert Halo play disc." message indicates that the game contents of disc 2 have been successfully installed. Pressing A on this screen shouldn't do anything. Since the contents of disc 2 is simply an installation procedure,
there isn't a way to manually install disc 2 to your console from the dashboard. Installing disc 1 to your console isn't required for gameplay, but allows the game to run faster and quieter without your console having to constantly read from the game disc.

According to your description, everything is running just as it should. Let me know if I can help with anything else. Happy holidays!

Tried to trick me into using an inappropriate forum, you mean.

i am not hijacking anything, and certainly no more than NG (funny how the guy toeing the MS party line isn't hijacking, but the guy with the exact same problem as the OP is).

Same issue here and Support isn't available at this time according to Microsoft.

It's not a game developer issue.

It's a Microsoft digital rights issue. If people who bought the digital deluxe version check the xbox store, they will see that according to the MS store they do not own the digital deluxe version, only the X/S version.

This is NOT a developer issue. The game does not load due to the DRM of MS not showing that the user owns the game. It does not even get to the point of contacting game servers.

Why has MS not acknowledged this issue and advised support staff of the correct response??