microsoft / microsoft/vscode-js-debug

Could not connect to Debug Target (Could not find any debuggable target)

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#2,246 2 comments 0 reactions 1 assignee View on GitHub

@connor4312 is already working on this.

Since Jul 11, 2025.

bug
Dominant language
TypeScript
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Description

Describe the bug
Receive an error when trying to launch chrome from visual studio with an Angular application. We have 2/3 developers experiencing the error, and I have my personal and work computers both having the same error. The chrome browser starts immediately after starting the debug but stays on the 'about:blank' page. Usually after starting the debug session, VS code connects to the chrome debug session and redirects to the localhost/port of the application specified in the launch.json.

Error: Unable to launch browser: "Could not connect to debug target at http://localhost:9222: Could not find any debuggable target"

Image

To Reproduce
Steps to reproduce the behavior:

  1. Start angular/.net application with "Debug Chrome" launch config or "Debug Both" launch config (launch config attached below).

Log File: vscode-debugadapter-62f25232.json

Launch File: launch.json

VS Code Version: 1.102.0

Additional context
This configuration has been working for 4+ years, have started getting this error in the last week. I usually run the project using "Debug Both". I have checked if 9222 port is being used, it is not. Seems like the debugger is trying to attach before chrome is ready. I created an attach to chrome launch configuration temporarily until this has been fixed.

Ports
Angular: 4200
.NET: 44356
Chrome debug: 9222

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