Run cannot run my EXE, ShellExecute can (UAC involved)

[ElwoodB]

Hi,

I know Run and ShellExecute are not the same but I really wonder if the following is a bug or not.

I have an AutoIT exe that I run by double-clicking the file in Windows (it runs in the current user profile) . It then runs another AutoIT exe which has the #RequireAdmin option.
When I use Run() it doesn't run, PID is 0 and @error flag is 1. If I use ShellExecute() it runs fine.

Should I create a bug report?

Edited July 4, 2023 by ElwoodB

[Jos]

2 hours ago, ElwoodB said:

Should I create a bug report?

Not really yet.  

First provide some sort of replication scripts so we can see what you are exactly doing and we can see it for ourselves.

[ElwoodB]

Hi Jos,

Here are two scripts.

Runme-first.au3

#NoTrayIcon
#include <MsgBoxConstants.au3>

Opt('MustDeclareVars', 1)

Local $pid

If FileExists(@ScriptDir & "\runas-admin.exe") Then
    $pid = Run(@ScriptDir & "\runas-admin.exe")
    If $pid = 0 Then
        MsgBox($MB_OK,"Cannot Run() runas-admin.exe",@error)
    EndIf
    $pid = ShellExecute(@ScriptDir & "\runas-admin.exe")
    If $pid = 0 Then
        MsgBox($MB_OK,"Cannot ShellExecute() runas-admin.exe",@error)
    EndIf
EndIf

Exit 0

Runas-admin.exe :

#NoTrayIcon
#RequireAdmin
#include <MsgBoxConstants.au3>
#include <GUIConstantsEx.au3>

Opt('MustDeclareVars', 1)
Opt("GUICoordMode", 1) ;1=absolute, 0=relative, 2=cell

MsgBox($MB_OK,"username is",@UserName)

Exit 0

About the environnment : 

I am on a Windows Server 2022 which is connected to an Active directory. I am logged as a user with admin rights (so I can right click a binary and select "Run as administrator". I have this UAC warning and when I click Yes, the program is executed.

Test :

I run "runme-first" by double-clicking the .exe.
It cannot Run(runas-admin.exe) and it displays @error = 1
And then it can ShellExecute() the same binary and displays the current username.

[Jos]

Ok..   i believe this is by design: 

 

[ElwoodB]

Thanks for pointing that out.

By reading Jon answer from 10 years ago, came to my mind the same questions of the two comments below Jon's.
When I read this Jon's comment, I'm sure a small explanation have to go to the Run() help file.

Quote

The default function to use would be ShellExecute really.

I propose :

Quote

Note: if you intend to run a program that requires elevation through UAC, you need to use ShellExecute() instead as it handles elevation if needed. Run() does not.

 

Edited June 27, 2023 by ElwoodB