运行命令行（cmd），需要“安全消息”

Question

I want to run the command line pnputil in c# program. The program needs to install USB driver. I know how to run cmd in c# program, but I have a different problem:

The driver that I want to install does't have permission of windows.

If I Install the driver via the "device manager->update driver" and choose the path of the driver, I get "Security Message" from windows that "windows can't verify the publisher of this drive software" and let me choose if install the driver or not (of course, if I choose to install - the installing succeeds).

If I run the command from the cmd pnputil -a <path_name_inf> I get this message too and I can install the driver.

But when I try to run the command via c# program - the program runs but the driver is not installed (I also don't get this message).

my code in c#:

System.Diagnostics.Process process = new System.Diagnostics.Process();
System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo();
startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
startInfo.FileName = "cmd.exe";
startInfo.Arguments = @"/C Pnputil -a <path_name_inf>";
process.StartInfo = startInfo;
process.Start();

How can I do that?

Answer 1

You could try to run the cmd using the runas verb:

startInfo.Verb = "runas";
startInfo.UseShellExecute = true;

This parameter causes a privileges elevation. The same thing could be reached when you use "Run as administrator" in explorer.

Answer 2

Your questions is more towards installing unsigned drivers.

Can you please try following steps: Open a command prompt as an admin and type:

bcdedit -set TESTSIGNING ON

Please refer MSDN link for more infromation on Test Signing. Making Test signing may put a watermark as TEST in desktop waterpaper

Answer 3

I know this is old, but I wanted to share my solution in case it can help someone else.

My specific scenario is that I wanted to add an unsigned driver package to the driver store on Windows 7 Home Premium 64-bit.

Like the OP, this worked as expected (meaning I received the security warning and the driver package was added to the driver store) if I executed pnputil -a <path_to_inf> using a command prompt using "Run as administrator".

However, if I tried to call pnputil from within C#, I was never able to get the security warning and the driver package was not added to the driver store. I had tried using various options (ie Verb = "runas", UseShellExecute = true, etc) with the FileName set as "pnputil" or "cmd".

Ultimately, what worked for me was to create a simple batch file that contained the following:

%windir%\sysnative\pnputil /a <path_to_inf>

My C# app would then call this batch file as follows:

Process proc = new Process();
proc.StartInfo.FileName = "<path_to_bat_file>";
proc.StartInfo.Verb = "runas";
proc.StartInfo.UseShellExecute = true;
proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
proc.StartInfo.CreateNoWindow = true;
proc.Start();

The user would first be prompted because I asked to run with elevated permission followed by the expected security warning. The driver package would then be added to the driver store as expected.

If this does not work as expected, you can add "pause" (without quotes) on a new line after the last command in the batch file and remove the WindowStyle and CreateNoWindow lines from the C# code to see what is happening on the command prompt.