Richard Parmiter

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What decides the installation directory on Windows 2003 x64

Posted on September 4th, 2008

When an application is installed on Windows 2003 x64 Edition, the installation is made to different directories and registry keys depending on whether it is a 32 or 64 bit application.

Directory location

  • c:\program files – (64 bit applications)
  • c:\program files (x86) – (32bit applications)

Registry location

  • HKLM\software\ – (64 bit applications)
  • HKLM\Software\Wow6432Node\ – (32bit applications)

So, what decides where the installation goes?

I have discovered the following from various digging about online.

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