After nearly two weeks, it seems that Nintendo has finally fixed error code 2123-1502. The issue popped up just over ten days ago after firmware 12.0.3 arrived. When some players tried to download a new game or simply update a game that they already had installed, the error code 2123-1502 would pop up preventing them from completing their download.
It seems that the solution has finally arrived. Nintendo Life reported several Switch users saying the issue is fixed on social media after Nintendo performed a server-side update on June 20. No details of the fix were announced, but Nintendo has a larger firmware distribution planned on June 28 that should forever banish error code 2123-1502.
Thank you, Nintendo. Now we can finally get back to Game Builder Garage.
