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Port 3000 is already in use

Code examples

3
0

address already in use :::3000 

lsof -i:3000 
kill -9 [PID]
2
0

Port 3000 is already in use, but when I try to kill nothing is found 

netstat -ano | findstr :3000
taskkill /PID "123" /F
1
0

port 4200 is already in use. 

taskkill -f /pid 18932
1
0

npm port already in use 

$ lsof -i tcp:3000
$ kill -9 PID
1
0

stop npm running on port 3000 

netstat -ano | findstr :3000
taskkill /F /PID PID_of_port
1
0

Something is already running on port 3000. 

npx kill-port 3000 8080 4200
0
0

port 8080 already in use 

netstat -ano | findstr 8080

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