#1323 tightvnc hangs when restart/shutdown windows 7 machine

Wendy Chen

There is a Windows 7 x64 machine (A) which runs TightVNC server service (64 bit version 2.7.10). Other Linux and Windows can remotely view it via all kinds of VNC viewer, like TigerVNC viewer on Linux or TightVNC viewer on Windows. However, when I click restart or shutdown on machine A, the VNC viewer which is located at another machine hangs if there are programs which need to close. If I am close to machine A, I can see that there is a message prompt at the local monitor. The other machines could not see the message prompt via VNC viewer. This message prompt asks "force restart" or "cancel". If I click "cancel" with local keyboard or mouse, the VNC viewer works again.

Here is the steps to reproduce the problem:
1, On a Linux or Windows machine (B), open a VNC Viewer to a Windows 7 x64 machine (A) which runs TightVNC server (64 bit version 2.7.10)
1, open a notepad on machine A and put some text in it
2, press restart on machine A
3, a message prompt shows on the local monitor of machine A
4, The VNC Viewer on machine B could not see the prompt and hang forever.
5, press "cancel" via local mouse of machine A
6, The VNC Viewer on machine B works again.

I attached the message prompt here.

I am not sure why the VNC Viewer does not catch up the message prompt which is a new feature on Windows 7 and 8.

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