How to: Set Environment Variables
The vsvars32.bat file sets the appropriate environment variables to enable command-line builds. For more information about vsvars32.bat, see Knowledge Base article Q248802.
If the current version of Visual Studio is installed on a computer that also has an earlier version of Visual Studio, you should not run vsvars32.bat or vcvars32.bat from different versions in the same Command Prompt window.
To run VSVARS32.BAT
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At a command prompt, change to the Program Files\Microsoft Visual Studio Version\Common7\Tools or Program Files (x86)\Microsoft Visual Studio Version\Common7\Tools subdirectory of your installation.
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Run VSVARS32.bat by typing VSVARS32.
Caution
VSVARS32.bat can vary from computer to computer. Do not replace a missing or damaged VSVARS32.bat file with a VSVARS32.bat from another computer. Instead, rerun setup to replace the missing file.