Fix Windows 11 USB Audio Not Working After September Update

Understanding the Problem

After installing a cumulative update for Windows 11 released in September 2025, some users have reported that their USB audio devices—such as headphones, headsets, speakers, DACs (digital-to-analog converters), and external sound cards—stop working or become intermittent. The device may appear in Device Manager with a yellow warning triangle, or Windows may play sound through the built-in speakers instead of the USB device. In some cases, the device is not recognized at all when plugged in.

This guide focuses specifically on troubleshooting and fixing USB audio issues that began or worsened after the September update. The steps below are organized from the simplest and safest to more advanced fixes. You do not need to be an administrator to perform the first several steps, but some later actions will require administrative privileges.

Check What Is Causing the Problem

Before making changes, it helps to confirm that the update is indeed the likely cause. Open the Settings app (press Windows key + I), go to Windows Update > Update history, and look for a cumulative update installed in September 2025. If the problem started shortly after that update, the steps below are the most relevant approach.

If you have other USB devices connected (a mouse, keyboard, external drive), check whether they still work. If all USB ports are affected, the issue may be broader than audio. This guide assumes that only audio-over-USB devices are problematic, while other USB peripherals function normally.

Fixes to Try in Order

1. Restart and Reconnect

The simplest fix often works because a restart clears temporary driver states and resets the USB controller stack. Save your work, then restart the computer. After the restart, unplug your USB audio device, wait ten seconds, and plug it back in. Test sound playback.

If the device still does not work, try a different USB port. Avoid front-panel ports on desktop PCs if possible, as they may have lower power delivery than rear ports. If you are using a USB hub, connect the audio device directly to a port on the computer.

2. Run the Audio Troubleshooter

Windows 11 includes a built-in troubleshooter that can automatically detect and fix common audio problems. To run it:

Open Settings (Windows key + I).
Go to System > Troubleshoot > Other troubleshooters.
Find Playing Audio and click Run.
Select your USB audio device when prompted, then follow the on-screen instructions.

The troubleshooter may reset the audio device, change the default format, or reinstall the driver. It does not remove any personal files.

3. Set the USB Audio Device as Default

An update can sometimes change the default playback device back to built-in speakers or HDMI audio. To check and change it:

Right-click the speaker icon in the system tray (near the clock) and select Sound settings.
Under Output, look at the dropdown menu labeled Choose where to play sound.
Select your USB audio device from the list. If you see multiple entries like “Speakers (USB……” or “Headphones (USB……)”, try each one.
Play sound and test whether audio comes through the USB device.

4. Run the USB Troubleshooter

Windows also has a troubleshooter specifically for USB problems. Although it is not shown in the main troubleshooter list by default, you can launch it manually:

Press Windows key + R, type msdt.exe -id DeviceDiagnostic, and press Enter.
Click Advanced and make sure Apply repairs automatically is checked.
Click Next and follow the prompts.

This tool checks for driver issues, power delivery problems, and device recognition errors.

5. Reinstall the USB Audio Driver

If the troubleshooter does not resolve the issue, reinstalling the driver for your USB audio device can remove corrupted driver files that may have been carried over from the update.

Right-click the Start button and select Device Manager.
Expand Sound, video and game controllers.
Find your USB audio device. It may be listed under a brand name (e.g., “USB Audio Device,” “Realtek USB Audio,” “C-Media USB Audio,” or the name of your headset or DAC).
Right-click the device and select Uninstall device.
In the confirmation dialog, check the box that says Attempt to remove the driver for this device if it appears.
Click Uninstall.
Restart your computer. Windows will automatically reinstall the driver when it boots up.

After the restart, plug in your USB audio device if it was disconnected, and test audio playback.

6. Disable USB Selective Suspend

Windows can put USB ports into a low-power state to save battery. This setting sometimes interferes with USB audio devices, causing them to drop out or produce no sound. Disabling it can help:

Open Control Panel (search for it in the Start menu).
Go to Hardware and Sound > Power Options.
Click Change plan settings next to your currently selected power plan.
Click Change advanced power settings.
In the list, find USB settings and expand it.
Expand USB selective suspend setting.
Set both On battery and Plugged in to Disabled.
Click Apply and then OK.

This change only affects the current power plan. If you switch plans later, you may need to repeat these steps.

7. Roll Back the Audio Driver

If the update brought a new driver version that is causing problems, rolling back to the previous driver may restore functionality.

Open Device Manager.
Expand Sound, video and game controllers.
Right-click your USB audio device and select Properties.
Go to the Driver tab.
If the Roll Back Driver button is available, click it and follow the prompts.
Restart your computer.

If the button is grayed out, no previous driver is stored on the system, and this fix does not apply.

8. Uninstall the September Update

If none of the above steps restore audio, you can temporarily remove the September cumulative update. This is a temporary workaround, not a permanent solution, because Windows may reinstall the update during the next automatic update cycle.

Open Settings > Windows Update > Update history.
Scroll down and click Uninstall updates.
Find the September 2025 cumulative update (its name will include “Security Update” or “Cumulative Update” and the date).
Select it and click Uninstall.
Restart your computer.

After the restart, test your USB audio. If it works, consider pausing updates for a few days to give Microsoft time to release a fix. To pause updates, go to Settings > Windows Update > Pause updates and choose a duration (up to five weeks in most editions).

9. Check for Manufacturer-Specific Drivers

Some USB audio devices, especially high-end DACs, gaming headsets, and studio interfaces, require proprietary drivers from the manufacturer. The generic Windows driver may not work correctly after a system update. Visit the support website of your audio device manufacturer and check for a driver update specifically compatible with Windows 11. Download and install any available driver, then restart your computer.

If the Problem Continues

If you have tried all the steps above and your USB audio device still does not work, the issue may be related to a hardware failure, a compatibility problem with a specific chipset on your motherboard, or a bug that Microsoft has not yet addressed in a later update. In that case:

Check the manufacturer’s support forum for your audio device to see if other users have reported the same problem after the September update.
Test the USB audio device on another computer to verify whether the device itself is functioning.
Contact the manufacturer of your motherboard or computer (if it is a prebuilt system) to ask whether a BIOS or firmware update addresses USB audio stability after the Windows update.

Microsoft typically releases a subsequent cumulative update within a few weeks that may include a fix. Keeping Windows Update enabled ensures you receive that fix as soon as it becomes available.

Frequently Asked Questions

Will disabling USB selective suspend affect my laptop’s battery life?

Disabling USB selective suspend may slightly increase power consumption because USB ports will no longer enter a low-power state when not in use. In practice, the difference is usually small, but if you are concerned about battery life, you can re-enable the setting once the audio issue is resolved.

Do I need to buy a new USB audio device if these steps do not work?

Not yet. A persistent problem after a specific update often indicates a software or driver incompatibility rather than a hardware failure. Waiting for a later Windows update or a driver update from the audio device manufacturer usually resolves the issue without any purchase.

Can I prevent the September update from installing again if I uninstall it?

Windows will eventually reinstall the update automatically. You can pause updates for up to five weeks in the Settings app to buy time, but permanently blocking a security update is not recommended because it leaves your system exposed to vulnerabilities. The better approach is to uninstall, pause updates briefly, and install the next update when it arrives.

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Rino Tota

Writer and Explorer at GloboSoft

Appassionato di tecnologia con una lunga esperienza nel mondo digitale. Con una laurea in ingegneria e anni di lavoro nell'industria tecnologica, mi dedico a esplorare il costante evolversi del mondo digitale e a tradurre i progressi tecnologici in linguaggio accessibile a tutti.