Hello @github, the links in the description should not work here. I always click on the hyperlink and wonder what I did incorrectly. I will probably never learn to do this "correctly" so please remove the href here:
If anyone else runs into "Could not find a WAM account" when @VisualStudio asks for updated credentials then do this:
Go to Options > Environment > Accounts. Change "Add and reauthenticate accounts using:" from "Windows authentication broker" to "Embedded web browser".