On 64bit windows, the 32bit CONNX ODBC Driver and OLE DB Provider are located in C:\WINDOWS\SYSWOW64. On a 64bit windows, w hen a 32bit process attempts to open a file in C:\WINDOWS\SYSTEM32 - it is automatically redirected to C:\WINDOWS\SYSWOW64. The reason Microsoft choose these locations was to provide the maximum about of backward compatibility possible.Ī key to making these locations work seamlessly is something called WOW64 file redirection. At first this may seem backwards, and counter intuitive. Also under 64bit windows, the 64bit DLL shared location is C:\WINDOWS\SYSTEM32. Under 64bit windows, it is C:\WINDOWS\SYSWOW64. Under 32bit windows, this location is (typically) C:\WINDOWS\SYSTEM32. The CONNX OLE DB Provider, and ODBC Driver are installed into the default location for shared windows DLLs. In an effort to ease the transition from 32bit to 64bit, Microsoft Windows has two different locations for storing shared 32bit and 64bit DLLs.
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