This issue has been posted before, and I've read the answers, which aren't working for me.
I was trying to set up Sourcetree for the first time, and fumbling around a little bit. I went to relaunch it and ever since, it has crashed on launch with the typical:
> Insufficient authentication credentials
> Failed to list teams for user [<wrong username>]
There is nothing in Windows Credential Manager for that, specifically. If I use Git CLI and put in my working credentials, they are saved in Windows Credential Manager, and I can remove them, but this doesn't affect Sourcetree.
I have completely wiped out C:\Users\<username>\AppData\Local\Atlassian\ and that did not help.
I have searched all of the Windows Registry Keys for "Sourcetree" and "Git" and found no reference to my wrong username.
Where is it hiding this saved username?
EDIT WITH ANSWER:
C:\Users\<yourname>\AppData\Roaming\Atlassian\SourceTree\accounts.json