Microsoft Fixes Windows Update App and Game Crashes
A recent Windows 11 preview update introduced a bug affecting apps and games using AC-3 audio decoding, but Microsoft has now deployed a fix.
Radwan AbdulhadiEditor and technology writer
Fix Deployed for AC-3 Audio Decoding Bug
Microsoft has officially fixed a known issue that caused games and Windows 11 apps using AC-3 (Dolby Digital) audio decoding to crash after installing the September 2026 preview update (KB5124010).
While KB5124010 is an optional update that requires clicking a "Download and install" link, which reduces the total number of potentially affected Windows users, it installs automatically on devices configured with the "Get the latest updates as soon as they're available" option toggled on.
Application Failures and Impact Details
Microsoft previously acknowledged this issue on its release health channels after receiving reports of applications failing to launch or closing without warning following the preview update deployment.
In some cases, applications worked normally until specific features were used, such as playing music. Affected applications varied and included games, media players, and certain productivity applications.
However, Microsoft noted that many modern apps that do not rely on Windows' built-in audio decoding for this specific type of encoding were unaffected. Furthermore, modern apps utilizing the legacy AC-3 codec often incorporate their own standalone audio decoding components.
Patch Tuesday Update Resolution
In a fresh update published to the Windows release health dashboard, Microsoft announced that the KB5127648 October 2026 Patch Tuesday update successfully addresses this known audio bug.
The company advised all affected users running Windows 11 24H2 and later systems to apply the new update immediately.
According to the official advisory, it said that users should install the latest security update for their devices because it contains essential improvements and issue resolutions, including the fix for the AC-3 decoding crashes.
Historical Context on Windows Audio Bugs
Over the past several years, Microsoft has encountered and resolved multiple other audio-related bugs impacting diverse software and Windows system components.
For instance, previous software iterations faced complications that caused game audio to unexpectedly jump to full volume when running specific external sound architectures.
Other hardware configurations faced temporary blocks on upgrades due to driver incompatibilities that triggered blue screen of death issues.
Additional Audio Patches and Safeguards
In previous maintenance cycles, Microsoft addressed a similar issue that triggered playback errors on specific systems and lifted safeguard holds once hardware compatibility concerns were cleared.
Past software updates have also temporarily caused Bluetooth headsets and speakers to malfunction on configurations utilizing enhancement software, prompting rapid engineering responses from Microsoft.
Sources
- BleepingComputerMicrosoft fixes game, app crashes caused by recent Windows update
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