OS: Windows 10 x64

I access a network server using a username + password. I'd like to use another username+password, but I cannot clear the old credentials. What I've done until now:

  1. there was nothing to delete in Windows credentials (Control Panel\All Control Panel Items\Credential Manager)
  2. net use * /del
  3. klist purge
  4. restart explorer
  5. restart PC
  6. changed the password on the server, and saving NEW credentials on the PC. When I reverted back to original server password, the PC connected automatically (this makes me think that those credentials were saved somewhere, but I don't know where).