Is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)

2. June 2009 23:48 by Dan in Development  //  Tags: ,   //   Comments (0)

Came across this nasty error the other day whilst trying to get an IIS app running on my Visat 64bit PC:

Error: Is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)

Solution:

  1. Within IIS 7 click on Application Pools (left hand side under {machine_name})
  2. Select your app pool and then click Advanced Settings on the right.
  3. Second setting in the list: Enable 32-Bit Applications - must be set to True.

 

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