Resolving ADB Server Version Mismatch Error

Resolving ADB Server Version Mismatch Error

5 April 2024 Stephan Petzl Leave a comment Tech-Help

When developing and testing Android applications, encountering an ADB (Android Debug Bridge) server version mismatch error can halt your progress. This error occurs when the ADB client on your computer is not in sync with the ADB server version, leading to a failure in communication between your development machine and the Android device or emulator.

Understanding the Error

The typical error message looks like this:

adb server version (XX) doesn't match this client (YY); killing...

This indicates that the ADB server (XX) is running a different version than the ADB client (YY) on your system.

Common Solutions

Several methods can resolve this version conflict. Below are the most effective solutions:

Method 1: Restart ADB Server

Often, simply restarting the ADB server can resolve the issue:

  1. Open a terminal or command prompt.
  2. Execute the command adb kill-server to stop any running ADB processes.
  3. Start the ADB server again with adb start-server.

After restarting the ADB server, try connecting your device again.

Method 2: Update ADB Path

If you’re using an Ubuntu-based OS, updating the ADB path might be necessary:

  1. Run adb kill-server to stop the ADB server.
  2. Copy the ADB executable from your Android SDK to a system directory, for example:
    sudo cp ~/Android/Sdk/platform-tools/adb /usr/bin/adb
  3. Make the ADB executable with sudo chmod +x /usr/bin/adb.
  4. Restart the ADB server with adb start-server.

Method 3: Configure Genymotion to Use Custom SDK Tools

If you’re using Genymotion as an emulator, configuring it to use the Android SDK tools can fix the mismatch:

  1. Open Genymotion settings.
  2. Navigate to the ADB tab.
  3. Select “Use custom Android SDK Tools.”
  4. Browse and select the path to your installed Android SDK.

Method 4: Consolidate ADB Executables

Ensure there’s only one ADB executable in your system:

  1. Search for any additional ADB executables outside your Android SDK directory.
  2. Delete or remove the path of any extraneous ADB executables from your system’s environment variables.

Method 5: Check for Software Conflicts

Other software, such as HTC Sync or 360mobile, may cause conflicts with ADB:

  1. Check your system for any software that may include its own ADB executable.
  2. If found, consider uninstalling the software or removing its ADB executable.
  3. Restart the ADB server with adb kill-server followed by adb start-server.


A mismatch between ADB server and client versions is a common issue but can be resolved with the above methods. Remember to ensure that your development environment is using the ADB version that matches the one required by your Android device or emulator. By maintaining a single source of ADB within your system and regularly updating your tools, you can prevent this error from reoccurring.

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