Inno Setup - How to run an aplication with admin privileges if the setup is set to PrivilegesRequired=lowest?

Question

I want to run the setup with PrivilegesRequired=lowest. How to set and run an application (dxwebsetup.exe) to install with my setup with Administrator privileges?

My code (Inno Setup - Avoid displaying filenames of sub-installers):

procedure CurStepChanged(CurStep: TSetupStep);
var
  ProgressPage: TOutputProgressWizardPage;
  ResultCode: Integer;
begin
  if CurStep = ssInstall then
  begin
    if IsComponentSelected('DirectX') then
    begin
      ProgressPage := CreateOutputProgressPage('Installing prerequsities', '');
      ProgressPage.SetText('Installing DirectX...', '');
      ProgressPage.Show;
      try
        ExtractTemporaryFile('dxwebsetup.exe');
        StartWaitingForDirectXWindow;
        Exec(ExpandConstant('{src}\_Redist\dxwebsetup.exe'), '', '', SW_SHOW,
             ewWaitUntilTerminated, ResultCode);
      finally
        StopWaitingForDirectXWindow;
        ProgressPage.Hide;
      end;
    end;
  end;
end;

Martin Prikryl · Accepted Answer · 2020-05-07T06:56:13.930

1

Use ShellExec with runas verb, instead of Exec:

ShellExec('runas', ExpandConstant('{src}\_Redist\dxwebsetup.exe'), '', '', SW_SHOW,
          ewWaitUntilTerminated, ResultCode);

When the current Inno Setup process runs without Administrator privileges, you will get a UAC prompt.

edited May 07 '20 at 06:56

answered Jun 15 '17 at 12:06

Martin Prikryl

167,268
50
405
846

1

Is it possible to avoid the message: "Do you want to allow the following program to make changes to this computer?" – Nico Z Jun 15 '17 at 12:29
@NicoZ Disable User Account Control via commandline and re-enable it, to do this, run those commands from pascal script. Search Google for *Enable or disable UAC CMD*. – GTAVLover Jun 15 '17 at 12:54
@GTAVLover All the solutions I found require restarting the system. – Nico Z Jun 15 '17 at 13:14
@NicoZ don't restart, ask user to restart and if he agree then continue – GTAVLover Jun 15 '17 at 13:20
2

Of course you **cannot avoid the UAC prompt**! It would be a terrible security hole! – Martin Prikryl Jun 15 '17 at 13:35
1

@GTAVLover Nico runs the installer without administrator privileges. Without administrator privileges, you cannot disable UAC prompt. – Martin Prikryl Jun 15 '17 at 13:36
@MartinPrikryl I didn't read the post correctly, sorry about that. :-| – GTAVLover Jun 15 '17 at 14:39

Inno Setup - How to run an aplication with admin privileges if the setup is set to PrivilegesRequired=lowest?

1 Answers1

Linked