Im installing a signed device driver silently on Vista using the dpinst. The exit code is invalid basically because Vista is prompting do you want to installthis device driver, but Im installing silently.
Is there a work around or is the DIFX 2.10 utility a workable solution?
If your driver package has been signed successfully for Windows Vista you should be able to install the device driver package 'silently'. How do you call DPInst? What kind of InstallShield project do you use?
If I install in UI mode it starts to install the device driver and then Vista pops up a message something like 'Device Driver Installation detected do you want to install or cancel'. In silent mode this cannot appear hence the -2147418112 error exit code I recieve from Installshields LaunchApplication function.
If I run the device driver install in UI mode and then re-run in silent mode I receive a 0 exit code.
Main reason for using DPInst is that the project does not use Features and Components. The project uses custom tables in DirectEditor to dynamically create its own custom Features (Modules) and Components.
I have a copy of DIFX 2.10, would there be an advantage of using that? Failing that I will ensure the drivers are properly signed.
Normally UI mode does not have elevated privileges, so I suggest that´s the reason why DPInst fails. The requestedExecutionLevel of the embedded manifest of DPInst is set to 'highestAvailable'.
I would recommend to launch DPInst with a deferred custom action in system context.
You could also use a InstallScript CA during the UI sequence using LaunchApplication with LAAW_OPTION_USE_SHELLEXECUTE and 'runas' as the lpVerb of the SHELLEXECUTEINFO Structure.
That would launch the application with elevated privileges but would also raise UAC.
