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Visual Studio 2022 - how to to Start Debugging with Blazor WebAssembly Project due to HTTP scenarios 500

πŸ‘€ Views: 156 πŸ’¬ Answers: 1 πŸ“… Created: 2025-06-08
blazor visual-studio debugging C#

I'm attempting to set up I'm optimizing some code but I'm working with an scenario when trying to debug my Blazor WebAssembly project in Visual Studio 2022. Every time I attempt to start debugging, I get the following behavior message in the output window: ``` HTTP behavior 500.0 - ANCM In-Process Start Failure ``` I've double-checked my launchSettings.json file, which looks like this: ```json { "profiles": { "IIS Express": { "commandName": "IISExpress", "launchBrowser": true, "environmentVariables": { "ASPNETCORE_ENVIRONMENT": "Development" } }, "BlazorApp": { "commandName": "Project", "launchBrowser": true, "applicationUrl": "https://localhost:5001;http://localhost:5000", "environmentVariables": { "ASPNETCORE_ENVIRONMENT": "Development" } } } } ``` I've verified that all my NuGet packages are up to date, including `Microsoft.AspNetCore.Components.WebAssembly.Server`. I also ensured that the ASP.NET Core hosting bundle is installed on my machine. When I try to run the project without debugging, it works fine, but I need to debug it to troubleshoot some components. I've tried clearing the browser cache, restarting Visual Studio, and even creating a new Blazor project to see if it’s specific to this project, but the scenario continues. Is there a known fix or workaround for this HTTP 500 behavior when debugging Blazor projects in Visual Studio 2022? Any insights would be appreciated! This is my first time working with C# latest. Am I approaching this the right way? I'm coming from a different tech stack and learning C#.