Fix MuMuPlayer Driver (VirtualBox) Issues - Loading and Startup Error

How to Fix the "Driver Failed to Load" Error in MuMuPlayer?

When launching MuMuPlayer, you may see the message "Driver failed to load." This error may occur if the emulator driver is blocked by security software, related files have been quarantined, or the driver fails system verification. Follow the methods below in order.

Method 1: Check Your Security Software's Block History

If third-party security software is installed on your computer, first check its quarantine area, block history, or trusted list:

1. Look for blocked or quarantined files related to MuMuPlayer.

2. After confirming that the file is from the official MuMuPlayer installation directory, restore it and allow it to run.

3. Add the MuMuPlayer installation directory to the security software's trusted list or whitelist.

4. Restart your computer and launch MuMuPlayer again.

You can right-click the MuMuPlayer shortcut on your desktop and select Open file location to view the installation directory.

Do not restore files from unknown sources. We also recommend keeping your security protection enabled rather than disabling it for an extended period.

Method 2: Check Windows Security

If you are using Windows' built-in security protection, follow these steps:

1. Open Windows Settings and go to Privacy & security > Windows Security.

2. Click Virus & threat protection and open Protection history.

3. Look for blocked items related to MuMuPlayer. After confirming that the file is located in the official installation directory, select the option to allow or restore it.

4. Return to Virus & threat protection and go to Manage settings.

5. Under Exclusions, add the MuMuPlayer installation directory.

6. Restart your computer and launch MuMuPlayer again.

The names and locations of these options may vary slightly between Windows versions. Follow the options displayed on your system.

Method 3: Reinstall MuMuPlayer Over the Existing Installation

If you do not find any blocked items, or MuMuPlayer still fails to launch after restoring the files, try reinstalling it over the existing installation:

1. Completely exit MuMuPlayer and all running Android devices.

2. Download the Latest Version of MuMuPlayer.

3. Run the installer and reinstall MuMuPlayer to the original installation directory.

4. After installation, restart your computer and launch MuMuPlayer again.

For detailed instructions, see How to Reinstall MuMuPlayer.

Still Not Resolved?

If the issue persists after completing the steps above, open Problem Diagnosis and submit the diagnostic information, the name of your security software, and a screenshot of the error page to online customer support.

For instructions on accessing diagnostic information, click the menu in the upper-right corner of the emulator and select Help Center, then Problem Diagnosis.

How to Fix the "Abnormal Driver Version" Error in MuMuPlayer?

When launching MuMuPlayer, you may see the message "Abnormal driver version." This error is usually caused by an incomplete update, inconsistent driver component versions, or files being blocked by security software. Follow the methods below in order.

Method 1: Restart Your Computer

After updating MuMuPlayer, an older driver version may still be in use by the system. Save any work in progress and restart your computer, then launch MuMuPlayer again.

If the error persists after restarting, proceed to the next method.

Method 2: Reinstall the Latest Version Over the Existing Installation

1. Completely exit MuMuPlayer and all running Android devices.

2. Open Task Manager and make sure no MuMuPlayer-related processes are still running.

3. Download the Latest Version of MuMuPlayer.

4. Run the installer and reinstall MuMuPlayer to the original installation directory.

5. Restart your computer after installation and launch MuMuPlayer again.

Do not mix installation packages or driver files downloaded from third-party websites with those from the official source. For detailed instructions, see How to Reinstall MuMuPlayer.

Method 3: Check Your Security Software

If your security software blocks, deletes, or quarantines files during the reinstallation process:

1. Open the quarantine area or block history in your security software.

2. Look for records related to MuMuPlayer.

3. After confirming that the file is from the official MuMuPlayer installation directory, restore it and allow it to run.

4. Add the MuMuPlayer installation directory to the security software's trusted list or whitelist.

5. Run the latest installer again to reinstall MuMuPlayer over the existing installation, then restart your computer.

Do not restore files from unknown sources. We also recommend keeping your security protection enabled rather than disabling it for an extended period.

Method 4: Uninstall and Reinstall MuMuPlayer

If reinstalling over the existing installation does not resolve the issue, back up any Android device data you want to keep, then uninstall MuMuPlayer and install the latest version.

• MuMuPlayer Data Backup Tutorial

• How to Reinstall MuMuPlayer

Still Not Resolved?

If the issue persists after completing the steps above, open Problem Diagnosis and submit the diagnostic information and a screenshot of the error page to online customer support.

For instructions on accessing diagnostic information, click the menu in the upper-right corner of the emulator and select Help Center, then Problem Diagnosis.

How to Fix the "Driver Failed to Start" Error in MuMuPlayer?

When launching MuMuPlayer, you may see the message "Driver failed to start." This error may occur if the emulator driver was not installed correctly, the system did not grant the required installation permissions, or security software blocked the driver from running. Follow the methods below in order.

Method 1: Reinstall Over the Existing Installation as an Administrator

1. Completely exit MuMuPlayer and all running Android devices.

2. Open Task Manager and make sure no MuMuPlayer-related processes are still running.

3. Download the Latest Version of MuMuPlayer.

4. Right-click the installer and select Run as administrator.

5. Reinstall MuMuPlayer over the existing installation directory, then restart your computer after installation.

6. Launch MuMuPlayer again.

For detailed instructions, see How to Reinstall MuMuPlayer.

Method 2: Check Your Security Software

If you see a blocking prompt during installation or startup:

1. Open the quarantine area or block history in your security software.

2. Look for records related to MuMuPlayer.

3. After confirming that the file is from the official MuMuPlayer installation directory, restore it and allow it to run.

4. Add the MuMuPlayer installation directory to the security software's trusted list or whitelist.

5. Run the latest installer as an administrator again, reinstall MuMuPlayer over the existing installation, and restart your computer.

If you are using Windows Security, go to Virus & threat protection > Protection history to check blocked items. You can also add the MuMuPlayer installation directory under Manage settings > Exclusions.

Do not restore files from unknown sources. We also recommend keeping your security protection enabled rather than disabling it for an extended period.

Method 3: Uninstall and Reinstall MuMuPlayer

If reinstalling over the existing installation does not resolve the driver issue, back up any Android device data you want to keep, then uninstall MuMuPlayer and install the latest version from the official website.

• MuMuPlayer Data Backup Tutorial
• How to Reinstall MuMuPlayer

Still Not Resolved?

If the issue persists after completing the steps above, open Problem Diagnosis and submit the diagnostic information, the name of your security software, and a screenshot of the error page to online customer support.

For instructions on accessing diagnostic information, click the menu in the upper-right corner of the emulator and select Help Center, then Problem Diagnosis.