Android Studio Debugger Port Error - "handshake failed - connection prematurely closed"

Question

When I try to attach the Android Studio Debugger to a process, I get the following error:

Error running Android Debugger (8603): Unable to open debugger port (localhost:8603): java.io.IOException "handshake failed - connection prematurally closed" 

Kudos to whoever spelled prematurely that way. Anyway, how do I get around this problem?

I'm using Android Studio 1.2.2 on Ubuntu. This did not help.

Answer 1

The best and one solution for me was just to restart Android Studio.

Before I tried to restart adb server from command prompt or disable and enable adb integration from tools->Android->Check/Unchek the line, unplug and plug device , but nothing helped.

Answer 2

For me these didnt work: Restart Android Studio,adb kill start server, restart phone.

Worked for me: Tools->Android->Disable and Enabled ADB Integration.