Hi Thomas,

On Tue, Sep 16, 2014 at 06:44:52PM +0200, Thomas Calderon wrote:
> This happens when you connect to the RDP server using legacy "rdp" mode.
> The graphical logon screen is displayed and my plugin code runs. The issue
> is that very early in the client code, I have an "Invalid descriptor" error
> when using WTSVirtualChannelOpenEx.
did GetLastError give any further details?

> I am wondering if you are allowed to use DVCs while the user has not yet
> authenticated himself.
> Could anyone confirm this ?
Interesting question.
Not sure if it's allowed or not but I could imagine that if the dynamic
virtual channel (drdynvc) is not (yet) loaded the open call will fail.
Did you try to open the channel "delayed"? - E.g. if you get an invalid
handle wait for some time and retry opening?

Best regards,
Bernhard

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