As a final resort, you should try uninstalling and reinstalling the platform tools via the SDK Manager on Android Studio. Unable to locate adb, android studio then, The ADB binary found at C: \Users\Lenovo\Appdata\Local\Android\Sdk\platform-tools\adb.exe is obsolete and has seriousperformance problems with the Android Emulator. If you’re still facing the can’t locate ADB error message on Android Studio then it can possible that somehow the damaged or corrupted platform-tools files have been corrupted or missing.