How to fix the error "Unable to open debugger port " in Android Studio?

Question

Error running Android Debugger (8600):
    Unable to open debugger port (localhost:8600):
    java.net.SocketException "Connection reset"

Solution 1

I was able to fix this with these commands:

• adb kill-server
• adb start-server

Solution 2

Try Restarting ANDROID STUDIO (Worked for me)

Solution 3

In my case, there was another service running on my laptop(Windows) that was using the port 8600. I opened Task Manager and stopped the service. Now, I could debug my application normally without the above error.

Solution 4

I solve the problem by checking my localhost.

Making sure 127.0.0.1 localhost.

Solution 5

For me this problem started when i upgraded my Android Studio to new version.

Please go to options menu Build and choose Clean Project.

That is it project started to run again and error was gone.

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