Android Studio 2.3 Update not opening app [Instant Run Service]

Question

I recently updated the Android Studio to 2.3. When I hit the instant run button, It compiles the app but doesn't open the app on the Android device. Even 'Hot Swap' is not enabled after that, it shows "No active 'app' launch". Any idea what I might be doing wrong. I tried creating a new project, but this error exists in that also.

I am getting below error:

 Error while executing: am startservice
 com.example/com.android.tools.fd.runtime.InstantRunService Starting
 service: Intent { act=android.intent.action.MAIN
 cat=[android.intent.category.LAUNCHER]
 cmp=com.example/com.android.tools.fd.runtime.InstantRunService }
 Error: Not found; no service started.

Answer 1

Got the same error after updating. As already noted, there's an open discussion on this topic. So far, the only work-around is that you actually disable instant run, that's the only thing that worked for me. You can do so in Preferences -> Build, Execution, Deployment -> Instant Run:

Turn it off and run the app again and it's going to work. That's the best we can do at this point.