ADB Server Not Acknowledging: Fix on Android

1 year ago
Benjamin Taylor
2 minutes

The adb server not acknowledging error typically occurs when the adb service fails to start correctly or has stopped. Here are some troubleshooting methods:

  1. To ensure ADB is properly installed: Input “adb version” in the command line, and if the version number appears, then ADB is correctly installed.
  2. Restart the ADB service: Stop and restart the ADB service by entering the following command in the command line.
  3. Stop the adb server and then restart it.
  4. Check if the ADB port is being occupied by other processes: Enter the following command in the command line to view the port number that ADB is listening on:
  5. list of connected devices
  6. If the port number is already in use or there are other abnormal situations, you can try changing the port number to start the ADB service. Input the following command in the command line to change the port number:
  7. Kill the adb server and start it again on a new port with the given command.
  8. Check ADB environment variable configuration: Make sure that the ADB environment variables have been correctly set up. You can input the following command in the command line to view the environment variable configuration:
  9. display the PATH environment variable
  10. Make sure the installation path of ADB is included in the environment variables.

If the above methods do not work, you can try the following steps:

  1. Reboot the device: Restarting the device once can sometimes resolve any ADB service errors caused by the device’s connection status.
  2. Update the ADB driver: If you are using a Windows operating system, try updating the ADB driver to the latest version.

If the issue persists, it may be necessary to investigate other issues with the device connection and ADB service.

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