babgvant wrote:Is there a

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May 31, 2011 at 2:46 pm #4139
mikinho
Participant

    [quote=babgvant]

    Is there a technote associated with this?  LcdWriter simulates keystrokes in a way similar to how any other remote application would and it works fine with UAC disabled. 

    [/quote]

    I believe David is referring to VNC on early Vista and Windows 7 days not being able to send Secure Attention Sequence (aka Ctrl+Alt+Delete) when UAC is disabled. 

    This occurs because the SendSAS API restricts usage when UAC is disabled per:

     

    To successfully call the SendSAS function, an application must either be running as a service or have the uiAccess attribute of the requestedExecutionLevel element set to “true” in its application manifest. If an application is not running as a service, it must be running as either the current user or the LocalSystem account to call SendSAS. In addition, if an application is not running as a service, User Account Control must be turned on to call SendSAS.

     

    The simple solution is a helper service that accepts a custom command to send SAS.  Most variations of VNC and other remote applications have been updated.