okay, this is getting silly. my Xbox One X dwonloads a game i had installed before, gets close to finishing, and then:

Something went wrong
We couldn't install this game.
Check your storage and network, then try again.
0x87e00017
Ive cancelled and restarted the install three times. The game is gonna an external SSD. Id rather not delete a bunch of other stuff unless thats actually teh problem. Has anyone figured out what 0x87e00017 really means?
I've seen a few forum posts mentioning a reset, but I really don't wanna redownload everything on my connection, smaller fixes first, please.