psr.exe的32/64位问题

Question

I currently have an issue with psr.exe. Actually, it works perfectly with the following command :

• C:\\windows\\system32\\psr.exe
• C:\\windows\\syswow64\\psr.exe
• psr.exe (with system32\\cmd.exe and syswow64\\cmd.exe).

BUT, it does not work when my program (a 32 bits program running on a 64 bits windows 7) use this bat to start the application. Nothing happens. My programm can open a notepad from a bat files, or execute whatever you want, but it does not work with psr.exe.

Can you give me some tips? Maybe it is not a 32/64 bits compatibility issue but I have other no idea about why this does not works...

EDIT : The batch file content is: C:\\windows\\system32\\psr.exe

The program running this bat is written in C, it uses this function to start it:

CreateProcessAsUser(
    hTokenDup,
    NULL,
    "C:\\toto\\mybat.bat",
    NULL,
    NULL,
    FALSE,
    NORMAL_PRIORITY_CLASS | CREATE_NEW_CONSOLE,
    lpEnvironment,
    NULL,
    &sInfo,
    &ProcessInfo)

It works perfectly if the .bat file contains C:\\windows\\system32\\notepad.exe instead of C:\\windows\\system32\\psr.exe .

If I double click on my bat files containing C:\\windows\\system32\\psr.exe from my desktop, it works perfectly, but from my C program, it does not work.

(NB : My c program works with other .exe files like notepad for example)

Many thanks.

Johan

Answer 1

If a 32-bit program running on 64-bit windows OS tries to access a file C:\\windows\\system32\\psr.exe , Windows redirects the request to file C:\\windows\\syswow64\\psr.exe .

To start a 64-bit system application from 32-bit environment you need to execute C:\\windows\\sysnative\\psr.exe which will be redirected to "real" C:\\windows\\system32\\psr.exe .

To run the bat-file entirely in a 64-bit environment, execute C:\\windows\\sysnative\\cmd.exe with following parameters: /c "C:\\toto\\mybat.bat"

However, this does not appear to be a problem in your case.

Could it be that the user you are trying to impersonate has a corrupted profile, home folder, environment, or does not have some sort of privilege required by psr.exe application?

Or maybe the app requires user profile to be loaded but you didn't load it by calling LoadUserProfile() beforehand?

Try testing by running your batch file like this:

c:\windows\syswow64\runas.exe /noprofile /env /user:INSERT_USERNAME_HERE "C:\toto\mybat.bat"

Does it work? Now try removing /env and/or replacing /noprofile with /profile . Does it now?