Viewer connects but cannot make changes

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Viewer connects but cannot make changes

Postby rcaddy » 2019-01-23 04:04

I recently installed a Windows 2016 server and installed 1.2.2.3 UVNC for communications. Connecting from a laptop and multiple desktops, with OS 7, 8.1, & 10, it allows me to connect without issue and I can work inside the operating system using explorer and some programs. Whenever I open AVG Anti-Virus or Firefox, there may be others but these are all I've tested, the viewer completely locks up and will not allow me to do anything in any program. If I disconnect and reconnect it still is locked. If I go to the server I can operate the desktop as normal so the desktop is not locked. I updated the software on each of the client machines so that they were at 1.2.2.3.
Additionally, I have tried connecting to a Windows 7 & 8.1 machines and it acts the same way so apparently it is not the OS. I also disabled the hook files just in case there was an issue there. I'm at a loss.
If I'm missing something obvious please feel free to correct me and any help is greatly appreciated.

Rod Caddy
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Re: Viewer connects but cannot make changes

Postby Rudi De Vos » 2019-01-23 10:50

I guess you started winvnc.exe as administrator or another user.

OS UAC protection. (win7>)
As soon as you start a "system app" input get locked by UAC protection.

winvnc.exe must be started with runas admin or as service
winvnc started as a normal admin is not elevated and can't inject keypresses in elevated apps.
Rudi De Vos
Admin & Developer
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Re: Viewer connects but cannot make changes

Postby rcaddy » 2019-01-25 00:03

Well Rudi,
I feel pretty stupid. I didn't think of that, I'll give it a try.

Thank you.

Rod Caddy
rcaddy
 
Posts: 7
Joined: 2007-07-09 20:59


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