title: Howto Force TFS 2010 to build a website using the 32bit ASPNET Compiler on a 64 bit build machine
body: <p>We have a very large product that compiles just fine on our 32 bit build controllers and mostly on our 64 bit build controllers with one exception. We have a precompiled web forms front end. When it builds on the 64 bit machine it shows a command line in the log file of
  <strong>*C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe -v /ourwebapp -p ..\ourwebapp\ -u -f "........\Binaries\Mixed Platforms_PublishedWebsites\ourwebapp\"*</strong>
  This causes an error because of some 32 bit third part dll's we have:
  <strong>ASPNETCOMPILER : error ASPCONFIG: Could not load file or assembly 'Leadtools.Codecs' or one of its dependencies. An attempt was made to load a program with an incorrect format. [C:\Builds\5\OurApp\OurApp Build\Sources\Product\Solutions\ourwebapp_ourwebapp.metaproj]</strong> </p>
  
  <p>Does anyone know the correct solution file syntax to force a 32 bit build regardless.
  Thank you.</p>