Hello,
I had a transparent profile picture before I changed it, it is the same as here: https://social.technet.microsoft.com/Forums/en-US/b0e3cc98-0646-415d-8021-e33283e36bcc/not-getting-transparent-account-picture-in-windows-10-1607-at-login-screen?forum=win10itprogeneral,
but the solution isn't working for me. I hopy anyone can help me