cannot use ctrl+alt+del in win7 when uvnc running as service

[thejim]

hello all, I hope someone can help. I am going mental with this.
i have windows 7 professional 32 bit and i'm running Ultravnc 1.0.8.2

If i run uvnc as a service i cannot use CAD.
If i run it as an application as Administrator i CAN CAD.
When running as a service i have tried running it as local system , local system with "can interact with desktop" and with the service logging on as Administrator, and another administrative user.

I have tried all the above combinations with uac set at all 4 levels, including off and all the way to the top.

I have the CAD.exe and the schook.dll, so i think i have tried every thing that the forum has suggested so far when other people have had CAD troubles too.

The weird thing is that if i use logmein free edition i can ctrl+alt+del just fine so I know it's not impossible for services to let me ctrl+lt+del.

Can anybody help?

[Rudi De Vos]

win 7 and cad

1) uac enabled
2) cad.exe need to be in the same folder as winvnc.exe
3) The ultravnc folder need to be at a secure localtion
"/program files/aaa". It doesn't work from a normal folder like
"/user/my"
4) winvnc.exe need to be running as service ( no account need to be set, run as system)

[thejim]

Thanks for your reply.
I am already doing all the things you listed.
winvnc is running as a service in c:\program files\ultravnc
uac is on.
cad.exe is in the same folder as winvcn.exe

Here's a screenshot. have i missed anything?


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[Rudi De Vos]

Try to recopy the cad.exe to the same spot.
copy cad.exe /tmp, remove from program files and copy back.

The UAC elevation place a special bit on the exe when you copy it to a secure location. Possible the previous copy was done without uac enabled.


--------- It could also be a policy setting ------------

A: Microsoft Windows has a policy called “Secure Attention Sequence”. This policy setting controls whether or not software can simulate the Secure Attention Sequence (SAS). If you enable this policy, it may fix the problem.

FYI,
This policy setting controls whether or not software can simulate the Secure Attention Sequence (SAS).

If you enable this policy setting, you have one of four options:

If you set this policy setting to "None," user mode software cannot simulate the SAS.
If you set this policy setting to "Services," services can simulate the SAS.
If you set this policy setting to "Ease of Access applications," Ease of Access applications can simulate the SAS.
If you set this policy setting to "Services and Ease of Access applications," both services and Ease of Access applications can simulate the SAS.

 Enable SAS simulation (Secure Attention Sequence)
 Click Start->Run...
 Open: gpedit.msc
 Click Local Computer Policy->Computer Configuration->Administrative Templates->Windows Components->Windows Logon Options
 Open the policy properties: Disable or enable software Secure Attention Sequence
 Select the option: Enabled
 Select the option: Services and Ease of Access applications
 Finally click OK
This procedure is for setting a computer that is not connected to a domain.
The setting for a computer connected to a domain is done on a domain server
under the logged domain administrator user by opening gpmc.msc.
It is also possible to set this on the local computer under the logged local or global
administrator domain user by opening gpedit.msc.
 Notes:
 Sending Ctrl+Alt+Del is not possible with Windows Vista Basic Home and Premium.
 The domain setting overwrites the local setting.
 Explanation:
 gpedit.msc - Group Policy Editor
 gpmc.msc - Group Policy Management Console

[thejim]

thanks for your help, but still theres no joy

I enabled the policy so services and ease of a access applications could access SAS. I also checked that uas was enabled, revoved the winvnc and cad.exe files and put them back, and after a reboot, still no joy. so i reinstalled it with uac turned on and still no joy.

Any more ideas?

[thejim]

does anyone else have any ideas? i've tried everything the forum says.
the weird thing is that if vnc runs as an app then the CAD works fine. can anyone help?

[thejim]

is there no other ideas? should i give the new build a go?