OS Requirements for Apps

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• Apps have OS requirements
• app may be designed for a certain OS
• app may only work on certain OS versions
• 64-bit software apps need 64-bit OS
• In 64-bit Windows OS:
  • 64-bit app files are installed in Program Files
  • 32-bit app files are installed in Program Files (x86)
  • Windows 64-bit shared system files are stored in %SystemRoot%\system32
    • same as Windows 32-bit OS
  • Windows 32-bit system files are stored in %System%\syswow64