Equalizer APO Not Working on Windows 11: 4 Quick Solutions

Enjoy the sound equalizer on the new MS operating system

by Afam Onyimadu
Afam Onyimadu
Afam Onyimadu
Afam is a geek and the go-to among his peers for computer solutions. He has a wealth of experience with Windows operating systems, dating back to his introduction... read more
Reviewed by Alex Serban
Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
Affiliate Disclosure
  • Because the sound equalizer is not officially supported in the Windows 11 OS, you may have some difficulty.
  • Users have run it in compatibility mode for later OS versions to get the best out of it. 

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Equalizer APO is a popular open-source equalizer software that allows users to customize the sound of their computer’s audio output. However, some users have reported issues getting Equalizer APO to work correctly on Windows 11.

In this article, we’ll explore why Equalizer APO may not work on Windows 11 and provide some quick solutions.

Does Equalizer APO support Windows 11?

The short answer is that Equalizer APO is not officially supported on Windows 11. The software was last updated in 2020 and has not been updated to include support for Windows 11.

However, there are a few merits of using this tool. Some of which include:

  • Customizable sound – With Equalizer APO, users can create custom equalization settings to enhance the sound of their music, movies, and games. Users can create their equalization presets, or use presets created by other users.
  • Global audio equalization – Equalizer APO is a system-wide audio equalizer that can equalize the sound of all audio played on your computer, including music, movies, and games. This eliminates the need for different equalization settings for different programs or files.
  • Open-source software – Equalizer APO is open-source software that is free to use, distribute and modify.
  • Customizable interface – Equalizer APO has a graphical user interface (GUI), allowing users to create their visual representation of the equalizer settings.

Expert tip:


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Since users may face APO and sound drivers errors, let us explore fixing and making it work on the newest Microsoft client OS.

How do I fix Equalizer APO on Windows 11?

Tip icon
Before going into the solutions, you must note that although Equalizer APO is a popular choice for many users, there is other equalizer software that you can use on Windows 11. Some of them have excellent compatibility with the system.

1. Enable Audio Enhancements in System sounds

  1. Press Windows + I to open the Settings app.
  2. Navigate to Sound.
  3. Scroll down and select All sound devices.
    equalizer apo not working windows 11
  4. Click on any of your Output or input devices.
    equalizer apo not working windows 11
  5. Lastly, under Audio Enhancement, select Device Default Effects.
    equalizer apo not working windows 11

2. Use compatibility mode

  1. Right-click on the Equalizer APO executable file and select Properties.
  2. Click the Compatibility tab, tick Run this program in compatibility mode for, then select Windows 10 from the dropdown menu.
  3. Click on Apply and OK.

3. Reinstall audio drivers

  1. Right-click on the Start menu and select Device Manager.
    equalizer apo not working windows 11
  2. Expand Sound, video and game controllers, right-click on your audio driver, and select Uninstall device.
  3. When prompted, confirm your choice.
  4. Restart your computer, and the driver will reinstall.

If you want other options than following the manual method, you can try specialized software to execute this process automatically.

Various errors are the result of a malfunctioning driver. When this is the case, you may need to update or reinstall completely this specific component. As the process is not straight-forward to complete, we recommend using an automated tool for the job. Here's how to do it:

  1. Download and install DriverFix.
  2. Launch the app.
  3. Wait for the software to detect all your faulty drivers.
  4. You will now be presented with a list of all the drivers that have issues, and you just need to select the ones you’d liked fixed.
  5. Wait for DriverFix to download and install the newest drivers.
  6. Restart your PC for the changes to take effect.


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Disclaimer: this program needs to be upgraded from the free version in order to perform some specific actions.

4. Disable Hardware Acceleration

  1. Press Windows + I to open the Settings app.
  2. Navigate to Sound.
  3. Scroll down and click More sound settings.
  4. Right-click on one of your devices and select Properties.
    equalizer apo not working windows 11
  5. Go to the Advanced tab, then untick Allow hardware acceleration of audio with this device, click Apply, and OK.

Since this app is not officially compatible with Windows 11, you may need a few extra steps to get it working well.

Hence, the solutions above should be effective enough if Equalizer APO is not working on your Windows 11 device.

Finally, let us know in the comments section which of the fixes worked for you.

Still having issues? Fix them with this tool:


If the advices above haven't solved your issue, your PC may experience deeper Windows problems. We recommend downloading this PC Repair tool (rated Great on TrustPilot.com) to easily address them. After installation, simply click the Start Scan button and then press on Repair All.

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