When I try to access any file server in my network for the first time, Windows is always trying to connect automatically with a wrong username:
Please don't mind that the screenshots are in German. The dialog doesn't really contain much useful information, it basically just says that shown credentials are wrong.
The email address mail@example.org is an old account of mine but the wrong one here and I have no idea where it is coming from. It's neither my local account (which I use to login on my machine) nor my organizations Active Directory account (which I use to access other hosts). I would like Windows to stop using it.
In the credentials store there is an entry called *Session which has these wrong credentials:
The problem is, if I try to change the credentials, Windows still tries to log with these wrong credentials after a reboot.
I tried:
- Changing the credentials using the "Choose another account" option in the dialog and also checking "Save credentials".
- Changing the credentials by editing the
Session*entry. - Deleting the
*Sessionentry. In this case no default credentials will be shown and I have to enter the user name manually.
It all works, but only until I restart.
I'm logged in with a local administrator account (which has no email accounts set up). I think I entered mail@example.org when setting up Windows at some point but I'm not sure where exactly.
So the question is, where are the default credentials coming from and how can I remove or change them?
I tried deleting all stored credentials, even ostensibly unrelated ones, as well as all network shares with net use * /delete. Additionally I verified with various other system tools, rundll32.exe keymgr.dll,KRShowKeyMgr, vaultcmd /listcredentials and cmdkey /list, that no credentials were stored anywhere, since some sources claimed that the credential manager may not show all entries in some cases. Unfortunately this didn't work and the Session* with the wrong username keeps coming back.
