com.android.ddmlib.InstallException: Failed to establish session react-native

Question

I am trying to run react-native android app in my nexus5 emulator

adb devices
List of devices attached
emulator-5554   device

started pack

Answer 1

Simply go to developer options and enable Install via USB below Debugging options.

Answer 2

In MI Devices. I solve this problem by goto Developer options -> turn on Install via USB. I hope it useful!

Answer 3

If you had already installed app on device go delete it. It's work for me

Answer 4

This issue happens to occur in Xiomi devices. In developers option, you don't have to disable MIUI optimization(disabling this won't sync your accounts) instead, enable 'USB debugging' option along with 'Install via USB' and 'USB debugging(Security settings)'. This will solve the issue :)