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How to Debug Visual Studio .NET Project in 64 Bit OS

This tutorial will explain on:

How to Debug Visual Basic .NET and Visual C# project in 64 bit Operating System.

If you are running 32 Bit operating system before and were intrigued to install 64 bit OS to improved performance of your computer, then maybe you are having problems debugging your Visual Studio .NET source code.

I am once having this issue which stops me from debugging all of my VB.NET 2008 source code after I installed Windows 7 64 bit.

Currently Microsoft’s don’t have plan in fixing this issue. So, to solve this problem, open your Visual Studio project.

  1. Double click “My Project”.

    My Project

  2. Click on “Compile” tab.

    Compile Tab

  3. Click on Advanced Compile Options.

    Advanced Compile Options

  4. Select x86 under Target CPU combo box.

    Advanced Compile Options

Once you change the “Target CPU” you will be able to debug your project in 64 bit OS.

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.

Virus note: All files are scanned once-a-day by for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.


1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.

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