My System32 folder is listed in my Environment Variables path. I have a command line program that I copied to that folder. The application will not start from the System32 folder or from any other folder. However, it will start from another folder if it is present in that folder. In other words, abc.exe will run at a command prompt at c:\xyz, if abc.exe is in c:\xyz. So, I know that the application is working. If I try to run it otherwise, I get the message that it's not an internal/external command, program, or batch file. Other command line programs that are in System32 seem to work as they should throughout the system. Thanks.