No sound after Windows Update | Windows 11 checks

Check this first

The short answer

Inspect the intended device and mute under Settings → System → Sound → Output. For a single silent app, inspect Volume mixer. For a missing output, inspect Device Manager. If the audio driver changed just before the problem, check whether its previous version is available. Consider removal of a specific Windows update only after the earlier comparisons.

Check whether your intended device appears under Sound → Output.
Compare a short sound in another app: all apps silent or only one?
Record the installation time and KB number under Windows Update → Update history.

Choose your next check

Start with the row that matches your situation. Change one setting at a time so you can tell what helped.

What you see	What to compare	Go to
Browser audio works but the game is silent	Inspect Volume mixer while the game produces sound.	Step 1
All apps are silent but the output exists	Check the selected output and mute first.	Step 1
Output is missing or Windows reports no installed output device	Inspect detection and enabled status in Device Manager.	Step 2
Audio stopped after the driver or Windows changed	Compare update history and whether driver rollback is available.	Step 3
Driver checks did not help or an audio service has stopped	Inspect Windows audio services.	Step 4
Steps 1–4 failed and a particular update remains suspect	Identify its KB and consider repair before removal.	Step 5

Check in this order

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Step 1: Compare the same sound and output

Play a short clip and compare another app. Check power and hardware mute on the speakers or headphones.
Open Start → Settings → System → Sound → Output. Record the current device and level, then select your intended output and inspect mute. For example, sound routed to an HDMI monitor may need to be directed to PC speakers; compare the same clip at a comfortable level.
If only the game is silent, leave it producing sound and open Sound → Volume mixer. Inspect that game’s mute, volume and assigned output.

Expected result or what you learned: If changing output or app volume restores sound, that setting is a likely immediate contributor. An update may still have triggered the change.
If something is wrong or unclear: If the output is absent, use Step 2. If it exists but other apps are silent too, use Step 3. For a game-only failure, inspect its own audio output settings.
How to undo changes: Restore the recorded output and level if needed. You may keep a setting that restores the intended sound.

Step 2: Inspect detection when the output is missing

Right-click Start → Device Manager. Expand Sound, video and game controllers and Audio inputs and outputs. Look for the device you actually used; do not attempt its properties if it is absent.
If missing, choose View → Show hidden devices, then Action → Scan for hardware changes. A hidden entry may represent a previously connected device, so compare it with the current physical connection.
If Enable device is available for the intended device, enable it and recheck Sound → Output. For a warning, open Properties → General and record Device status text and code. On a managed PC, ask why a device is disabled before changing it.
If scanning does not find it, press Windows + R, enter msinfo32 and record System Model. Use that model’s manufacturer support page for its Windows 11 audio driver. For a custom PC, check the motherboard model, including BaseBoard Product if listed.

Expected result or what you learned: If the output returns, repeat Step 1. A recorded warning code helps identify the appropriate device or driver investigation.
If something is wrong or unclear: If no matching driver is available or the device remains absent after supported installation, contact the manufacturer with the model. If present but silent or showing a warning, continue to Step 3.
How to undo changes: Viewing entries alone changes no configuration. Scanning may detect devices. Do not disable a successfully restored device just to recreate failure; reverse only an unintended device change after identifying it.

Step 3: Compare update history and driver versions

Open Settings → Windows Update → Update history and note dates and KB numbers. A shared date is a clue, not proof of causation.
Use Windows Update → Check for updates to look for fixes. If installing, save work and compare the same output and clip after the required restart.
If still silent, open the actual audio device’s Properties → Driver in Device Manager and record its version and date. If the issue followed a change and Roll Back Driver is available, compare the retained previous driver after restarting. Otherwise ask the PC or audio-device maker for a supported matching version.

Expected result or what you learned: If a corrective update or rollback restores playback, record the operation and before/after versions.
If something is wrong or unclear: If the output remains missing, give the manufacturer your Step 2 results. If it is present but silent, inspect services in Step 4.
How to undo changes: If rollback causes another problem, consult the manufacturer’s supported driver matching the recorded version. A Windows update is not a simple settings toggle; review Step 5 before removal.

Step 4: Inspect Windows audio services

Save work and finish any call or recording: restarting an audio service interrupts audio. Press Windows + R, enter services.msc and open the service list.
Inspect Windows Audio and Windows Audio Endpoint Builder. Start a stopped service if you are authorized to manage it; for a running service, Microsoft also describes Restart as a comparison. Do not change unrelated services or bypass managed restrictions.
After each individual operation, play the same clip through the same output and record which change, if any, restored sound.

Expected result or what you learned: If starting or restarting a service restores sound, its state may have contributed. Check playback again after the next normal PC restart.
If something is wrong or unclear: If a service stops again or reports an error, record it for the administrator or manufacturer. If services run normally but audio remains silent, review the update relationship in Step 5.
How to undo changes: Inspection needs no undo. Do not stop a required working audio service merely to restore its previous failed state.

Step 5: Consider repair or a specific update only after earlier checks

If Steps 1–4 did not help, recheck the suspected update’s date and KB number. Do not select an update just because it was installed that day.
Before removing a security update, Microsoft points Windows 11 users to Settings → System → Recovery → Fix problems using Windows Update → Reinstall now, if available. This repairs the same Windows version while preserving apps, files and settings. Verify important backups first, save work and maintain power and internet; it takes time and needs a restart. Managed or older systems may not offer it; do not bypass policy to expose it.
If repair does not resolve the issue and the identified KB appears under Windows Update → Update history → Uninstall updates, consider only that update. Some updates cannot be removed. Removing a security update removes its protections; on managed PCs, the administrator must decide.
If you do remove it, restart and compare the same output and clip. If nothing changes, do not remove other KBs by trial and error. Record the KB, driver version and results for support.

Expected result or what you learned: If a particular repair or removal alone restores sound, record the changed KB and post-restart result.
If something is wrong or unclear: If the KB or recovery option is absent, or removal has no effect, stop guessing and ask the manufacturer or Microsoft with the collected results.
How to undo changes: Repair reinstallation has no simple undo switch. After removing an update, check with support for a corrective release and restoration of the relevant security protection through Windows Update.

When to ask for help

Provide the PC model, update dates and KBs, output device name, same-clip comparisons, Device Manager error, audio-driver version and service states. If the device remains absent, say so instead of assuming its Properties page is available.

FAQ

Can I uninstall a Windows update?

Microsoft documents it for a problematic update, but timing alone is not proof and some updates are not removable. Review security consequences first. Windows 11 users should consider the same-version repair option before removing a security update.

Why is Roll Back Driver unavailable?

A previous driver must be retained for that device. Confirm you selected the right hardware, then ask its manufacturer for a matching supported version. Do not remove unrelated drivers.

Why does an HDMI monitor show video while PC speakers are silent?

The sound may have been routed to the monitor. Select the PC speakers in Step 1 and compare the same clip. If those speakers are missing from Output, use Step 2.

Report an error in this guide

Sources

English adaptation preserving the Japanese guide’s diagnostic branches, steps, outcome tables, precautions and source order. Official instructions were reviewed; the examples are editorial comparisons, not reproduced hardware failures. Record each change and compare the same device. Ask the administrator before changing a managed PC.

Microsoft: audio after Windows updates Microsoft: app-only silence Microsoft: missing audio outputs Microsoft: Device Manager error codes Microsoft: update removal and its conditions Microsoft: same-version Windows repair