I have the VNC server running as a service on a Windows XP Pro machine.
Access is via a web browser on port 5800, tunneling through ssh to a Linux
network, and then to the Windows XP Pro machine, which is on the Linux
network.  You can be sure that someone more capable than I set this up and
made it work.

The XP Pro machine has 2 user accounts "A" and "B".  When neither user
account is logged on, it is possible to connect via VNC and log onto either
account at will (if you know the password).  But the logon session
originated by the remote user terminates when the VNC connect ends.

The accounts do not behave the same if a user is already logged in locally:

  o If the "A" user is logged in locally, one can connect via VNC and join
the pre-existing logon session.  The remote user and the local user (if a
person is present) can both control the desktop.  This "joint use" is
desired, because it permits the local logon session to continue after the
VNC connect ends, so that a program started up by the remote user can
complete.

  o If the "B" user is logged in locally, the VNC connection is refused,
saying "Sorry, Try Again".  We want the "B" account to have the same "joint
use" as is possible on the "A" account.

I do not know why the "B" user acts differently.  "A" is the Administrator,
and "B" is a Power User.  Making "B" a member of the Administrators group
does not change the situation.  I can find no security or network setting on
the XP machine that treats "A" and "B" differently, and have prowled the VNC
documentation and discussion archives without finding this issue discussed.

Any suggestions would be most appreciated.

Robert Crawford
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