Ensure Android Studio isn't accidentally in "Offline Mode." Go to File > Settings > Build, Execution, Deployment > Gradle and uncheck "Offline work" if it's enabled. 3. Clear Corrupted Caches
Sometimes a partial or "broken" download prevents a fresh attempt. Clearing the internal cache forces Android Studio to try again from scratch.
If you use a VPN or proxy, you must manually configure it in your gradle.properties file. could not download gradle-4.2.2.jar
The error usually stems from network restrictions, corrupted caches, or repository misconfigurations rather than the file itself being missing from the internet. 1. Fix Repository Sources in build.gradle
If you're seeing the error you're likely dealing with a failure in the Android Gradle Plugin (AGP) fetching its core components. This specific version, 4.2.2, is a widely used stable release of the Android Gradle Plugin. Ensure Android Studio isn't accidentally in "Offline Mode
buildscript { repositories { google() // Essential for Android Gradle Plugin 4.2.2 mavenCentral() // Modern replacement for JCenter } dependencies { classpath "com.android.tools.build:gradle:4.2.2" } } allprojects { repositories { google() mavenCentral() } } Use code with caution. 2. Bypass Network or Proxy Issues
In your build.gradle file, ensure your repositories are ordered correctly: Clearing the internal cache forces Android Studio to
Many older projects still rely on JCenter, which has been in read-only mode and can be unreliable. Switching to mavenCentral() or the official Google repository often resolves the issue.