Question

So I try to run a .msi file like I would an exe file, which may be the problem. I get this error message

java.io.IOException: Cannot run program “\”: CreateProcess error=193,
%1 is not a valid Win32 application

       try {   Runtime rf = Runtime.getRuntime(); 
                   Process pf = rf.exec("\\IE8fix.msi");    
                } catch(Exception e) {                 
                    System.out.println(e.toString());                 
                            e.printStackTrace();
                                                    } 

Answer 1

Windows installer is in %windir%\msiexec.exe
An MSI file is not standalone. It needs to be run like msiexec \"file.msi\"
So use:

try {
   Runtime rf = Runtime.getRuntime(); 
   Process pf = rf.exec("msiexec /i \"\\IE8fix.msi\"");    
} catch(Exception e) {                 
   //System.out.println(e.toString()); // not necessary       
   e.printStackTrace();
}