https://bugs.winehq.org/show_bug.cgi?id=53309
--- Comment #1 from Hans Leidekker hans@meelstraat.net --- The launcher is confused by the SECBUFFER_MISSING buffer. It resets the buffer type to SECBUFFER_EMPTY but doesn't reset the buffer size, which is an invalid input according to my tests. If I fix Wine to reject this like Windows the launcher windows appears immediately, even though the connection fails.