VNC4.0: Screensaver with password to lresume , VNCclient error read connection aborted (10053)

[Sommer@ARA Thunersee]

Hy,
We use in LAN VNC4.0 Server on Win2000 and VNC4.0 Client on WinXP.

Cannot connect, if screensaver on Win2000 server has a password to resume.
Win2000 Sever terminate screensaver and prompt the win2000-login window.
Client gets error message: read connection aborted (10053).
No problem, if screensaver on Win2000 server has no password to resume.
What I have to configure on VNCserver? Or what on VNCclient?
Thanks for help.

Hanspeter