Microsoft fixes game and app crashes caused by Windows update

Microsoft has 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. The fix is included in the October 2026 Patch Tuesday update KB5127648 for Windows 11 24H2 and later.

• The bug affected games, media players and some productivity apps using AC-3
• The fix ships in the October 2026 update KB5127648
• Windows 11 24H2 and newer systems were affected
• KB5124010 installed automatically with the early updates option enabled