title: Visual Studio 2015: No 64-bit command prompt
body: <p>In previous versions of Visual Studio, there were separate command prompts for x86 and x64.  In VS2015, there's only one, and it's forced to 32-bit explicitly.</p>
  
  <pre><code>@call "%VS140COMNTOOLS%VCVarsQueryRegistry.bat" 32bit No64bit
  </code></pre>
  
  <p>My project launches a batch file pre- and post-build to call installutil to uninstall/reinstall my windows service.  When building for x64, I get the message:</p>
  
  <pre><code>System.BadImageFormatException: Could not load file or assembly... 
  An attempt was made to load a program with an incorrect format
  </code></pre>
  
  <p>Rather than fall down the rabbit hole trying to change the scripts, does someone have an easy solution to launching a 64-bit visual studio command prompt?  I can't believe this isn't installed by default.</p>