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HOWTO: Run 32-bit DotImage Assemblies in an ASP.NET Application on a 64-bit Machine


If you wish to run an ASP.NET web application that uses our 32 bit components on a 64 bit server, you need to enable 32 bit applications in the ApplicationPool which is running your site/application.

  1. Go to START -> Settings -> Control Panel -> Administrative Tools -> Internet Information Services (IIS) Manager
  2. Find the application pool that is running your site
  3. Select "Advanced Settings ..." from the Actions menu
  4. Set the "Enable 32-Bit Applications" value to True (see image below)
  5. Cycle your application pool

For older (Legacy) versions of IIS and DotImage (.NET 1.1), See this Microsoft KB article for more information

How to switch between the 32-bit versions of ASP.NET 1.1 and the 64-bit version of ASP.NET 2.0 on a 64-bit version of Windows

For more information, please see: INFO: Bitness Roundup Whitepaper: x86, x64, AnyCPU

Original Article:
Q10181 - HOWTO: Running 32-bit DotImage assemblies in an ASP.NET application on a 64-bit machine

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