jarablue,
Seeing no one knows what you did in your Registry, please go though the steps of this tutorial exactly. Based off reports, it has worked in eliminating the update looping error for those who had it in Bliz’s version, including me.
If, by chance, it doesn’t work, it would suggest that there’s something unique to your system environment causing your problems. I suggest that because, per our previous convos, the port forwarding also isn’t working for you.
Also, you’re not helping people understand your issue when you consistently refer to your problem as “boot loop error”. That means something totally different than “update loop error”.
In the end, if you can’t get the gateways to work then refund D1. If you want to play D1 online, GoG’s version of D1 works fine.
Lastly, frustration is understandable. However, it’s not license to break the forum rules. I’d recommend you edit the profanity, including the masked profanity, out of your last post. You could lose your posting priviledges which would make it even more difficult to find help.