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"Access is denied" error on ALL devices when installing APO, even in administrator mode

Josh Lai
2026-01-21
2026-01-22
  • Josh Lai

    Josh Lai - 2026-01-21

    I'm not sure why this error keeps occurring...
    I used to use EqualizerAPO a while back, and then when trying to set it up again, I keep failing to install APO to the selected devices.

     
  • Josh Lai

    Josh Lai - 2026-01-21

    Note that I have already tried the troubleshooting options.

     
  • Peter Verbeek

    Peter Verbeek - 2026-01-21

    This could be by an overactive malware/firewall app. Or at the Behringer software installation if any software was provided. Or perhaps it's the same issue as I mentioned over here although in this case it isn't likely.

     
  • Josh Lai

    Josh Lai - 2026-01-21

    The thing is, the installation isnt working on ANY device, even non Behringer ones, so im not sure why Windows would be blocking access. I've also tried disabling Windows Defendee too.

     
    • Peter Verbeek

      Peter Verbeek - 2026-01-22

      It does happens in rare occasions. All the time I'm supporting Equalizer APO I still don't know why. I doubt it if the developer knows. Besides anti-malware apps my best guess is that it has to do with DRM as Equalizer APO does need to bypass that in order to work on an audio device. Then again, this should happen on all Windows computers and it just doesn't. It rarely happens.

      Sadly I don't know how to help.

       

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