Gradle Project Sync failed in Android Studio 2.3.1

Question

Upon reopening Android Studio after an improper shutdown, my gradle project sync failed and many errors like: \"Failed to resolve: junit:junit:4.12\" started showing up in the E

Answer 1

Here is a working solution..

Step 1) In Android Studio go to File > Project Structure

there unticheck "Use Embedded JDK" and below choose your JDK location..

Step 2)

Go to file gradle > wrapper > gradle-wrapper-proparties change gradle version to 3.5-all

Step 3) close the project and reopen

Answer 2

From your first screenshot

Gradle is in offline mode, which means that it won't go to the network to resolve dependencies.

Go to Preferences > Gradle and uncheck "Offline work".

After that try cleaning the project and Re-running again?

Answer 3

What worked for me;

Go to Preferences > Gradle & uncheck "Offline work"

Goto File > Invalidate caches and restart.

The project would restart and can begin to install dependencies. Dont worry if it takes a time, that could be due to slow network. Just go and sip coffee while you wait ;)