Cannot debug in visual studio 2017

I cannot start the debugger in Visual Studio 2017. I get this error >"Cannot connect to runtime process, timeout after 10000 ms - (reason: Cannot connect to the target: connect ECONNREFUSED 127.0.0.1:1904)"

I went to submit an incident to Microsoft but they want $499 for the pleasure. Don't see why I should have to pay when their software is broken!

I'm using it successfully with the following options enabled.

In Visual Studio go to: Tools -> Options -> Debugging -> General

• Enable JavaScript debugging for Asp.Net (Chrome, Edge and IE)
• Enable Legacy Chrome JavaScript debugger for ASP.NET

I solved this with:

In Visual Studio go to: Tools -> Options -> Debugging -> General

• Disabled JavaScript debugging for Asp.Net (Chrome, Edge and IE)

I resolved this issue by closing all browser, tabs and killing all processes in Task manager , then build and run the project, it is working for me.

I kept getting this error. The following steps worked for me.

• Open Tools
• Go to options
• Go to Debugging
• Go to General
• Uncheck Enable JavaScript debugging for ASP.NET (Chrome, Edge and IE)

Had the same problem after I tried to put a breakpoint in the javascript code. The project kept opening at "Microsoft/VisualStudio/EdgeAdapter/6e91fadb/landingPage.html" url.

Then followed what @Camila Alvarado said.

• In Visual Studio go to: Tools -> Options -> Debugging -> General

• Disabled JavaScript debugging for Asp.Net (Chrome, Edge and IE)

It was solved.

On windows 7 and Windows 10 I had same problem, I followed steps from Debugger for Chrome Visual Studio code and solved my problem, Missing bit was I had to append in chrome exe short cut target. Steps

1. find chrome short by typing chrome in start menu of windows and click "Open File Location" as below

2. now right click on Google Chrome short cut, click on properties and go to Target field, at the end append --remote-debugging-port=9222 as shown below

3. close application by pressing ctr + c, and restart it using npm start, start debugging application, it will hit the break point. Happy days.

Somehow you enabled the Javascript debugger that's why this error is occured , So the solution is Go To Tools in Visual Studio Tools -> Options -> Debugger -> General -> Uncheck the Enable the Javascript debugging for ASP.NET(Chrome , Edge and IE)

I had the same problem. It was intermittent and only arrived ab out a week ago (after MS update).

I applied the second Debugging option quoted... (Enable Legacy Chrome JavaScript debugger for ASP.NET) and now the problem seems to have gone away.

Thanks

This does not fix it, but it seems to eliminate the error. I had this error when the project was built in a new tab instead of a new window. After closing all the tabs in the destination browser the project was built just fine.

For me, the problem was the browser. I launched the debug mode with google Chrome and got the error, then I changed the browser to Firefox and worked. It should be an intermittent problem. Maybe a PC restart solves the problem.

For me this was the browser as well, I had the web application I wanted to debug in an existing chrome window, when I ran with debugging it was opening in a separate window and displaying the error.

When I closed the web application in the existing chrome window it opened in a new window just fine with debugging enabled.

Exit Visual Studio and run again but "Run As Administrator"

This problem happens when someone disables JavaScript in Chrome and shuts down the browser. So, when next time you run the project, it does not allow to do so.

In this case, just enable JavaScript, which will solve the problem.

at the end of all search i just get answer by changing my browser from chrome to firefox.

I used to get this error when running React app and using asp net core API.

But when I first open API and then I launch the React website I didn't get that error, I think its the sequence which has the solution.

This happened on my machine in Visual Studio 2019 when I put a breakpoint on a JavaScript line. It came up with some message saying I needed to enable client script debugging (forget exactly what), and then I couldn't debug at all in Edge - I got this:

Curiously it still worked in Chrome. So then I went into Tools / Options and unticked this option, to disable JavaScript debugging:

This solved the problem!

Quicker way to resolve the issue is Disable Script Debugging in Running configuration as the image below

For me, I am using VS Studio 2019 with a WebSite (not a Web Application). I had the Start URL value set. I changed that to Use "Current Page" in the Property pages of the Web Site