I've recently a strange problem with my PC. If I open any. Exe file download and open this I get the following error: C: \ ... \ program.exe is not a valid win32 application. I recently got Windows 7 on my PC, I do not know if this is what to do, but a while back worked so good (even on Windows 7). Subsisting. Exe files that are already installed I can open it, it runs only. Exe files I download. Please reply with any solution How to open .exe files in Windows 7 ?