On an old machine with a working Spark I changed the PC name to a name not in Active Directory.
This removed that laptops name for AD
Then I changed my machine (where spark does not work) to that laptops name.
Testing Spark my computer still crashed while using that laptops name.
That laptop with the new name had no issues with Spark. I was able to log in without a probem.
So something is not configuring correctly here.