Deleting Azure Resources when portal is stuck and unable to acquire token for subscription

So that's a long headline!
I recently had some issues trying to delete a resource in one of my resource groups in Azure, and when I decided to try and use powershell to do it I ran into more problems. So here is a short recap of what I did, in case somebody else runs into the same issues.

Background:
I have both an MPN account for my own company and an MSDN account from a company I work for, both are connected to the same Microsoft ID but are different subscriptions on different tenants.

So here's my issue. I wanted to delete some old resoures in the Azure portal so save some of my dev credits, but whenever I opened the resources in the portal they were just stuck loading forever.
After two days of this I got fed up and decided to fix it with powershell (which I probably should have been doing in the first place.
So what I did was fire up powershell, and run the following lines:


And that produced the following error:

So first I was met with one issue, then a new one when I tried the other, recommended path of fixing things.
Luckily for me this annoyed me, so I did some very quick google searching to find a workaround to get my workaround fixed, so I simply did this to log in instead:



And voilá! The subscription was available and everything was working fine.
And just to clearify how to delete the resources, just run the following commands


Nothing big, but here's the entire solution in one blog post. Also, I'm a much happier man now with plenty of credits left on his Azure subscription.