Back in September, Microsoft released optional preview update KB5124010, which caused issues with Windows 11’s built-in decoding of Dolby Digital AC-3 audio. The bug caused some games and apps to crash when changing volume or using certain audio functions. In some cases, apps and games even failed to launch.
Most programs weren’t affected as long as they relied on their own audio decoding components. But for any that relied on the built-in offerings in Windows 11, a fix was desperately needed from Microsoft.