Methods 1 and 2 did nothing. Method 3 is a stupid suggestion. I'm not changing my Microsoft account.
How ironic it is that an attempt to help that you characterize as "stupid" says nothing about "changing" your Microsoft account. Before biting a hand that's attempting to feed you, you might stop to think first, but maybe not. Could it be that the suggestion to create a new account might be to determine if the problem might be related to your main user account being corrupted, and creating a new account (which has no effect on the main account) might help to narrow down the cause? Maybe not so stupid?
Point taken. Perhaps I misunderstood what was suggested. Anyway, I have since created a new dummy account. This required a new email address to be setup as well. Unfortunately this also did not fix the problem.