Cannot Get Localhost 3000, 1 instead, and still get refused. exe has the local address 192. localhost:3000 is not working in the browser [closed] Asked 5 years, 1 month ago Modified 1 year, 7 months ago Viewed 66k times localhost:3000にブラウザでアクセスしてみるとブラウザに「このサイトは安全に接続できません」とメッセージが表示されました。 Railsのログを見てみると以下が出力されていました。 Summary I'm having trouble running a Next. I don't understand why. my backend server node is running on port 5000 and I'm using concurrently to start both servers at the same time whenever I'm trying fetch the data its using port 3000 where is my frontend running. I tried rails -b 0. I’ve saved the changes to App. html page - but NO LOGIN button. 9. json file as below to load the frontend on a different port. js/ reinstalled node. Yet when checking for the log in the console I see a “Not Found” in the browser window with a 404 in the console. 1 or an IPv6 address of ::1 If you look at your hosts file in C:\Windows\System32\drivers\etc you should see the following: Access-Control-Allow-Origin: https://localhost:3000 Untill you are able to configure that as a workaround you can install the below chrome extension to resume your testing Running a Vite + React application inside Docker can be challenging, especially when it doesn't appear to open on localhost:3000. though. js file to the back end. I’m trying to set up a simple checkout using Stripe, but when making the POST request to the server I’m getting a 404 not found error. Previously, my localhost:3000 was in use by a Razer server which I would terminate, however, this fix doesn't seem to work anymore. 3. I'm working on a React app with a mySQL database (from the Mysql app) and I'm using node to create an API. localhost:3000 is not working in the browser [closed] Asked 5 years, 1 month ago Modified 1 year, 7 months ago Viewed 66k times I want to know why it cannot get or not routed properly and what should be done. Usually, I use npm start to run my app and view it in a browser on localhost, port 3000. From the console I get: Failed to load resource: the server responded with a status of 404 (Not Found). So the problem is when the server is running on localhost and I hit localhost:3000/ in browser it says cannot get with a white background. Normally, a server running in WSL should be accessible from the Windows (host) machine without any issues. js due to access control checks error message cited in the question has nothing to do with the request to https://api. Did you mean to fetch http://localhost:3000/list instead? Also you're using a timeout to set something on the response but the get function is likely synchronous meaning it will have returned before it can send the list; consider looking into promises. Please help. 13 dev server running at: > Local: http://localhost:3000/ > Network: use `--host` to expose ready in 240ms. 0 I constantly get a 'http://localhost:3000/test 404 (Not Found)' when I launch my application which is supposed to launch node queries. 125:139. Access-Control-Allow-Hea I have been working with a node. js:479 POST http://localhost:3000/ 404 (Not Found) I understand that FileUploader. js application, routes define how an application responds to client requests at a particular endpoint. I searched for it but any of the answers didn't answer what localhost:3000 mean. 1 hi, i have been using next auth in my many projects and it worked fine, but recently for some reason it just stoped working in my latest next 13 versi Apart from using github and tailwind css, I've done everything else she said to do, but I cannot access localhost:3000. 1:3000 on various browsers and they all cannot establish a connection to the server. I chose the Gitpod option to complete the challenges. js create new app using npx create- localhost://3000 returns: "Cannot GET /" #18101 Closed PreetSangha opened on Sep 7, 2018 · edited by PreetSangha I have cloned the project successfully but after running the npm start I got the Cannot GET / message on the browser and localhost:3000 not found. js hi all i used to work on MERN project for sometime but now my react app wont run on localhost:3000. I’m having difficulty starting the section: Basic Node and Express - Meet the Node console . I've followed the standard setup process, but when I try to access the app at localhost:3000 or any other port, I get a "Conn The app was working fine before but now even if I download a fresh copy of the sample project and load it and follow the instruction from the start, accessing localhost:3000 is not showing me the app. localhost is a magic string that should do a local DNS lookup which routes to an IPv4 address of 127. Running a backend HTTP API locally while a frontend runs on another port (for example localhost:3000 or localhost:5173). Any help would be appreciated. js cannot load even it run on port 3000,localhost:3000 cannot see any website #57036 Unanswered vnxz asked this question in Help edited Localhost:3000/api/products 404 Error You did not create res. 22. 19. I've been trying to connect my react . The installation has visible speed change compared to wsl1 and went smoothly. js server on localhost:3000. If you have another local PC, install the same Vuetify app on that machine and try connecting to it remotely. org shown in the question. json: Summary I'm having trouble running a Next. when I goto http://myIP:3000 I get the index. Have searched but unfortunately can’t find a solution to my problem. Proxy error: could not proxy request /api/products Check this: Discover how to solve the frustrating `ERR_CONNECTION_REFUSED` issue when trying to access your Node. 2 node - 20. FileUploader. I commented out the latter and now IE and firefox work with localhost:3000. . Jul 6, 2024 · If you can't access localhost:3000, ensure your firewall or antivirus software is not blocking the port. 0. Cannot connect to the target at localhost:3000: Could not connect to debug target at http:localhost:3000: Could not find any debuggable target. Today, I started I am new to web development. I checked my hosts file and had 2 entries in there for localhost, one for 127. The Fetch API cannot load http://localhost:3000/static/js/0. I've tried updating my package. js. I'm using this launch. My express app's database is listening on port 3000 when I run in VSCode but when I try to load localhost:3000 on the browser, there was an error… I'm working on some boilerplate code to get a VueJS frontend working with a Go-powered backend (using gorilla/mux for a router): Currently, I seem to have everything working for the most part. I'm using react with redux trying to fetch some products. Following is my gulpfile. Dec 10, 2025 · How to Solve Common localhost:3000 Problems While working with localhost:3000, you may run into typical issues such as “address already in use”, “connection refused”, 404 errors, or CORS problems. 168. only terminal commands as seen below: *PS C:\\Users\\ruben\\OneDrive\\Bureaublad\\dapp> cd . 0:3000 , 127. Now, when I try rails s - It shows tcp:localhost:3000 has Puma server listening, but, when I type localhost:3000 in the Chrome browser in Windows, I get nothing. then witih https://myServerDNSName:3000 I get a “this site cannot be reached” page. 0 s also, to bind the server, still nothing happens. chunk. I've tried making new apps with npm and with yarn, both do not work. js or you did not set the proxy. May 28, 2023 · I am getting the "Cannot GET /" on my browser when using node and express. php file, but I put it to the root folder and provided path: > dev > vite vite v2. I have a API in API Gateway and I created a method and enabled CORS and gave it access method. 1. I am trying to follow a tutorial but i run into problems before i even have written a line of code. js`. I have created a very simple database with two columns 'username' and 'password'. next - 13. log("Hello World")toApp. In a Node. Starting with the reason you do not see anything on localhost:3000, is because there must be a proper webapp or a website/server running on that port, but the port:3000 is currently running some process, just not of a server/site/app. 0 > APP_URL: http://localhost If you do not have a express server then probably you need to proxy that request you can google it out. Possibly it's not running, it's broken, or a firewall has blocked access to that connection. Solve localhost HTTPS certificate warnings and NET::ERR_CERT_AUTHORITY_INVALID errors with mkcert for trusted local development. I am using Vue and vite to practice the workflow of the web application with fetching API, following this tutorial. Laravel v9. ). header. I am having trouble with ‘npm run develop’ I am able to see the homepage at localhost:8000, but I cannot go to localhost:3000 to sign in or to the localhost:3000/explore page. I've followed the standard setup process, but when I try to access the app at localhost:3000 or any other port, I get a "Conn I typed this into terminal $ curl -X POST http://localhost:3000/voice and I got this error curl: (7) Failed to connect to localhost port 3000: Connection refused I've In following the instructions to set up the server on the command line, install the dependencies, and navigate to localhost:3000 It seems that you didn't start the server. As the project is ready to start I add console. So far i tried the following Updated node. \\ Hello, I am on a Mac and have installed the repo locally. 1 and another for ::1. openweathermap. Generally, CORS should be handled on server side. Apart from using github and tailwind css, I've done everything else she said to do, but I cannot access localhost:3000. Testing Java application servers such as Tomcat, Jetty, or Spring Boot apps that listen on port 8080 by default. js can't find upload. Aug 4, 2025 · In this blog, we’ll explore why localhost:3000 became a standard, the tools that rely on it, how to troubleshoot it, and how to access it remotely when you're not on the same network. This is the Rea… After starting the server with node server. js project for a few weeks and it has been working great. response. js app on my Windows machine. Mar 24, 2024 · ERR_CONNECTION_REFUSED on localhost:3000 indicates your server app isn't taking requests. When I read how to setup react project I see localhost:3000. I have done everything from from turning off the firewall to resetting browser but cannot get it to show the newly created react app. js, but this is still true Hello! I am a frontend dev trying to run a express api project (from my company) using docker, and when i go to the localhost 3000, it says cannot GET I dont know anything from express, but if i cant solve this problem, i guess i have to learn express What can this mean? I check the localhost:3000 on my browser but it says "This webpage is not available". This guide offers clear ste Seems to be working fine, just like with my previous app. This simple… Localhost not working? Get comprehensive solutions for localhost connection problems, ERR_CONNECTION_REFUSED, and local development server issues on Windows, Mac, and Linux. 2. Troubleshooting WSL + localhost:3000 'connection refused' issue # wsl2 # createreactapp # iphelper Just spent an hour trying to figure out why the browser wouldn't open localhost:3000 (served by Webpack/create-react-app in WSL2). js I'm getting an error stating Cannot GET when I access localhost:3000 and I just wondered if anyone knew how to fix it? Whenever I run npm start, the React app is compiled and it shows that it is running on my localhost:3000, however, the browser is unable to start the app. get ("/api/products") on server. At the end of the yarn dev command, I got the Things I tried: Changed 3000 port, Changed user and password for my localhost DB Tried another application routers in my POSTMAN and they work (not Vite) add inbound rule for 3000 port in my network proxy settings delete node modules However, as I try to access the localhost:3000, it keeps refusing: "ERR_CONNECTION_REFUSED" I searched on the internet for solutions and tried opening ports by creating an inbound rule on security settings, turned IIS on, used 127. Every developer, at some point, has typed localhost:3000 into their browser and watched their application come to life. Can't get to localhost:3000 and welcome to express Asked 11 years, 4 months ago Modified 8 years ago Viewed 4k times mikkel pohjola is having issues with: what editor do you use in this video, because i cant get localhost:3000 to work Running Chrome 56 and am getting the following message logged in my console performing a cross origin fetch (): Fetch API cannot load http://localhost:8080/transaction. why next. 5 next-auth - 4. Let's go through some common troubleshooting steps to help you I followed the instructions on how to install the app with node and it creates all the files correctly, the only problem is that it does not show up on the localhost 3000. When I do "netstat -a -b" it shows that node. Additionally, check your network settings to ensure there are no restrictions on localhost connections. Jan 21, 2026 · Localhost refused to connect error can be caused by an incorrectly configured port, insufficient permissions, or an inoperative web server. check below for proxy setting. Some things to note: -I was able to connect to localhost just a while ago--it just seems like it suddenly stopped working out of the blue. I've tried following suggestions online on how to fix it, but nothings worked so far (firewalls disabled, etc. Aug 2, 2024 · When you see the "Cannot GET /" error, it means that the server received a request for the root URL (/), but there is no route defined to handle this request. However, I try connecting to localhost:3000 , 0. davu, x4i1, unjdi, lrz5b, sdff, oqahs1, xwbud, 8myaq, e7uaxn, 6zu3qm,