Hot Wheels expansion won't download. Help!

Bought the expansion this morning and anytime I try to download it, it just says “Downloading,” “Pending,” “Downloading,” “Error.” And the error number is 0x87E00005 but there’s nowhere on the Microsoft website that mentions anything about that code. I’ve tried restarting my console, restarting the download, everything. Nothing is helping. If anyone has figured out how to get past this, please let me know:

Is the game located on the same drive as the windows installation?
I had some problems with forza installed on a different drive.