Run quick assist(QuickAssist.exe)) in C#

Kyeongdon Lim 41

Hi, I'm making a wpf application witch starting "quickassist.exe" in system32 folder.

here is my code.

 string path = @"C:\windows\system32\quickassist.exe";
  ProcessStartInfo startInfo = new ProcessStartInfo();
  startInfo.FileName = path;
  startInfo.Verb = "runas";
  startInfo.UseShellExecute = true;

  Process.Start(startInfo);

Every thing is ok except connection.
(ex. stating exe, enter code, select authorization)

In connection section, "quickassist.exe" show error message on it's own window.

I'm trying to figure out what makes the problem.
but there is no clue like logs or exception message.

what should I do for fix this problem?

DaisyTian-1203 11,626 Reputation points

2020-12-21T07:33:00.933+00:00

@Kyeongdon Lim
Welcome to Microsoft Q&A platform.
I tested your code in my visual studio, but I didn't meet any error. Is there any error message description for your connection? Could you show me the detailed steps to reproduce your error?By the way, what platform is your project target? framework or .net core?
Kyeongdon Lim 41 Reputation points

2020-12-21T16:23:41.617+00:00
Hi @DaisyTian-MSFT
Thanks for your answer.

As you tested, just launch 'quickassist.exe' is fine. but, connect to other window is problem.

Can you access to other window with 'quickassist.exe' launched from the code above?

For reproduce the error, you need 2 PC.

first one for run the code above for run 'quickassist.exe',
second one for jus run 'quickassist.exe'.

they will connect to each other.

These are my test steps.

Launch 'quickassist.exe' on other window.

Get access code from other window's 'quickassist.exe'

Launch 'quickassist.exe' on my PC with codes above.

Input the access code from other window's 'quickassist.exe'

Try to connect other window with the access code

Error message shown

These are my target platform.
Window 10
.net framework 4.8

Accepted answer

DaisyTian-1203 11,626 Reputation points

2020-12-22T06:42:56.783+00:00

Please right your project > Choose Properties > Click Build tab > change the Platform target Any CPU to x64. As below picture shown:

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Kyeongdon Lim 41 Reputation points

2020-12-22T09:55:32.897+00:00

Thanks for your reply.

You wrote an answer my clickonce questions.

You save me once again!

Ps. Is quickassist.exe support only x64 configuration?

DaisyTian-1203 11,626 Reputation points

2020-12-23T01:49:44.637+00:00

@Kyeongdon Lim
This question is not a native WPF question. In my view, it may support x86 on x86 device, anyway you can test it on x86 device. The failure may due to your runtime environment is X64. You can check the task manager at x86 and X64 runtime , and the icons are different. The latter is the same as clicking on the run Quick icon.
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Run quick assist(QuickAssist.exe)) in C#

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