Software⏱️ 2 min read📅 2026-05-31

How to Fix: Fatal error: "No Target Architecture" in Visual Studio

Learn how to fix: Fatal error: "No Target Architecture" in Visual Studio.

Quick Answer: Try checking your system settings or restarting.

The error 'No Target Architecture' in Visual Studio 2010 is caused by a mismatch between the target architecture and the compiler's configuration. This can occur when compiling in x64 mode with WIN32 preprocessor definitions.

🛑 Root Causes of the Error

  • WIN32 and x64 modes are mutually exclusive.

🛠️ Step-by-Step Verified Fixes

Method 1: Disable x64 Mode

  1. Step 1: In the Solution Explorer, right-click on your project and select Properties.

Method 2: Update Preprocessor Definitions

  1. Step 1: In the Solution Explorer, right-click on your project and select Properties. Then, go to C/C++ >Preprocessor definitions, and remove the line starting with WIN32.

💡 Conclusion

By disabling x64 mode or updating your preprocessor definitions, you should be able to resolve the 'No Target Architecture' error in Visual Studio 2010.

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