I’m having trouble with my NextJS project. When I run npm run dev in the terminal, everything seems fine. It says the server began on port 3000, however, when I access it through my browser I encounter an error stating that the site can’t be reached because localhost refused to connect.
I’ve double-checked my network connection, firewall settings, and even looked up online solutions, but nothing worked. I previously had another NextJS project that ran on localhost:3000, which I later removed—could that be affecting this project?
In the terminal, the output is as follows:
> [email protected] dev
> next dev
ready - started server on 0.0.0.0:3000, url: http://localhost:3000
Could someone help me understand what’s going wrong?
I’ve encountered a similar issue before, and it can be frustrating. One thing that helped me was checking if any other processes were using port 3000. Sometimes, even after closing a project, the port remains occupied.
Try running ‘netstat -ano | findstr :3000’ in your command prompt to see if anything’s using that port. If you find a process, you can end it using Task Manager or the ‘taskkill’ command.
Another approach that worked for me was changing the port. In your package.json, modify the dev script to ‘next dev -p 3001’. This will run your app on port 3001 instead.
If these don’t work, consider clearing your browser cache or trying a different browser. Sometimes, browser-related issues can cause connection problems.
Lastly, ensure your antivirus isn’t blocking the connection. Temporarily disabling it can help identify if it’s the culprit.
Hope this helps you get your project up and running!
yo, had dis issue b4. try killin all node processes n start fresh. run taskkill /F /IM node.exe in cmd. if dat dont work, maybe ur firewall’s blockin it. check ur firewall settings or disable it temp. also, try clearin browser data n usin incognito mode. gl m8!
Have you tried clearing your browser’s cache and cookies? Sometimes, residual data from previous projects can interfere with new ones, especially if they’re using the same port.
Another thing to check is your hosts file. It’s located at C:\Windows\System32\drivers\etc\hosts on Windows. Make sure there are no entries blocking localhost or 127.0.0.1.
If those don’t work, try running your project with the --hostname flag: ‘next dev --hostname 0.0.0.0’. This forces Next.js to bind to all network interfaces, which might resolve your issue.
Lastly, check if you have any VPNs or proxy settings enabled. These can sometimes interfere with local development servers. Disabling them temporarily might help isolate the problem.