I think the issue is that Bungie maybe forgot 8ntegrating windows 7 architecture into the new update. Being a company once support for windows 7 was closed they must have moved on to windows 10. From what I gather windows 10 has some advanced functionality that is not present in win 7. Direct X 12 for instance, or .Net 5 both of which have no support on win 7. It's just my speculation. However I am going to try and install windows 10 and see if this revolves the issue. But the root of all evil lies in the fact that Bungie did not test for win 7 compatibility and went forward with the expansion. If we are lucky they will provide a quick solve otherwise it may be a massive wait since they will have to rework the entire windows architecture to make in compatible with windows 7.