Windows 7 Ctrl+Alt+Del Registry Fix?

[bjblackmore]

Hi,

Have just started using UltraVNC 1.0.9.6.1 for our remote user support. It works great for Windows XP, but on WIndows 7, when you do a Ctrl+Alt+Del you get a message asking if you want to make changes to UAC. I'm assuming this makes some changes to the registry. Does anyone know what the changes are? I'd like to roll these registry changes into the installation MSI, so they are made at the point of installation.

Looking through the forum, it appears to be just one registry change, is this correct?:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\SoftwareSASGeneration="dword:00000001"]

Thanks

Ben

[B]

That's the key to enable software generated SAS (Ctrl-Alt-Del). It' s not really directly related to UAC.

I haven't run on Win7 yet so I'm not familiar the message you're getting.

[bullitt]

Have you tried this:

Open up the Local Group Policy Editor (gpedit.msc) on the Win7 workstation.
Go to: Computer Configuration> Windows Components> Windows Logon Options
Double click Disable or enable software Secure Attention Sequence and select Enabled
In the drop down box under Options: choose "Services and Ease of Access applications"
Apply> OK> Exit

[Prisma]

As far as I understood, bjblackmore wanted to set the privileges within the msi part. So I'm not shure why using gpedit.msc should help him.

@bjblackmore: We have written a wrapper around uvnc for setting dynamic IDs, specific UI and so on... kind of SC.
Possibly we could have done this setting by using windows API. But we also use the registry key you mentioned above. And it works great, also with Win7.
So... it should work for you too. If something changes with later Windows Versions, you'll recognize it, won't you?

[gperkins]

Thanks for this forum entry. I can report use of Ctrl Alt Del key sequence success on Windows 2008 R2 Enterprise edition:

To this registry key:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

I added this DWORD value:

SoftwareSASGeneration 1

I tested this with Windows User Account Control (UAC) enabled and disabled; both settings work (I had read some older postings implicating UAC as an issue, but that was apparently been resolved in subsequent revisons).

May I recommend that the UltraVNC MSI installer be updated to include making the change to the registry accordingly?! (Someone would need to research and test whether the registry key and value settings differ depending on the version of Windows; I am suprised this is not already included in the 1.0.9.6.1 installer.)

Thanks.

[planetjeff]

Hi all - just verifying I applied the above registry change to our Windows 7 Enterprise 64-bit system, and it worked like a charm.

[Prisma]

May I recommend that the UltraVNC MSI installer be updated to include making the change to the registry accordingly?! (Someone would need to research and test whether the registry key and value settings differ depending on the version of Windows; I am suprised this is not already included in the 1.0.9.6.1 installer.)

Done, see http://forum.ultravnc.info/viewtopic.ph ... 79&#p91893

I wrote this a few days later completely independent