Just started working in React JS ... I made changes in App.js file after which whenever I try to run the local host:3000 (React JS local server) ... It is showing it can't be reached
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1Asking the obvious, is the server started by running `npm start`? – user700284 Apr 26 '21 at 11:39
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Please take a [tour](https://stackoverflow.com/tour) of stackoverfow before you start asking the questions – Guruprasad Apr 26 '21 at 11:46
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Can you telnet to the port? Try:
telnet localhost 3000
That should tell you if the ports unavailable at the TCP level, or whether something's going on at the HTTP level.
Ping might not work if ICMP is disabled, which could be completely unrelated to your issue.
Also, try looking in your hosts file for any redirections:
c:\Windows\System32\drivers\etc\hosts
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type in your terminal: netstat -an |find /i “listening” to find out which ports are listening. – Iban Dominguez Noda Apr 26 '21 at 12:49
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Had a similar issue, I was working on multiple react projects. Whenever I switched the project, I cleared my browser cache/cookies and it started working for me seamlessly.
Omkar
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