Cant debug asp net core code code type is x64 so debugger does not load sym


Debugging is an essential part of the software development process. It allows developers to identify and fix issues in their code, ensuring that the functions as intended. However, sometimes debugging can be challenging, especially when encountering errors related to the ASP.NET Core code type being set to x64, preventing the debugger from loading symbols.

The Problem

When debugging ASP.NET Core code, it is not uncommon to encounter the message “Can't debug ASP.NET Core code. The code type is x64, so the debugger does not load symbols.” This error occurs when the code type is set to x64, and the debugger is unable to load the necessary symbols for debugging.

The Solution

To solve this issue, we need to ensure that the debugger can load the symbols for debugging ASP.NET Core code. There are a few steps we can take to resolve this problem.

Step 1: Check Project Configuration

The first step is to verify the project configuration. Open the project properties and navigate to the “Build” tab. Ensure that the “Platform ” is set to “Any CPU” or “x86” instead of “x64”. This allows the debugger to load symbols .

// Example:


Step 2: Update Launch Settings

If the project configuration is correct and the issue persists, we need to update the launch settings. Open the “launchSettings.json” file located in the “Properties” of the project. Look for the profile you are using for debugging and ensure that the “commandName” is set to “Project”.

// Example:
  "profiles": {
    "IIS Express": {
      "commandName": "Project",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"

Step 3: and Rebuild

If the steps did not resolve the issue, try cleaning and rebuilding the solution. This ensures that all necessary files and dependencies are up to date. After cleaning and rebuilding, try debugging the ASP.NET Core code .


Debugging ASP.NET Core code can be challenging, especially when encountering errors related to the code type being set to x64. By following the steps outlined in this article, you can resolve the issue and successfully debug your ASP.NET Core application. Remember to check the project configuration, update launch settings, and clean and rebuild the solution if necessary. Happy debugging!

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