Port & Network Error
Fix "Error: listen EADDRINUSE: address already in use :::8080"
Developer guide and instant terminal command to diagnose and solve this error.
Terminal Output
$Error: listen EADDRINUSE: address already in use :::8080
Why Does This Error Happen?
An active Apache Tomcat, Spring Boot, Jenkins, or background web server instance is already bound to port 8080.
Instant Terminal One-Liner Fixes
Linux (Bash / Zsh)
kill -9 $(lsof -t -i:8080)
macOS (Terminal / iTerm2)
kill -9 $(lsof -t -i:8080)
Windows (PowerShell Run as Administrator)
Stop-Process -Id (Get-NetTCPConnection -LocalPort 8080).OwningProcess -Force
Comprehensive Step-by-Step Resolution
- 1Check which application is listening on 8080.
- 2Force kill the conflicting process.
- 3Re-run your server build.
Dedicated Companion Tool
Open ToolTroubleshoot using the Port 8080 Process Killer
Use our client-side utility with zero server upload for instant debugging.
Frequently Asked Questions
Frequently Asked Questions
Frequently Asked Questions
Everything you need to know regarding specifications, syntax, and security best practices.
An active Apache Tomcat, Spring Boot, Jenkins, or background web server instance is already bound to port 8080.
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