Microsoft confirms a Windows update is causing game crashes on RGB-lighting PCs
Microsoft has officially confirmed that its August 2026 Windows update (KB5121003) causes game crashes on PCs using RGB lighting software built on the inpoutx64 driver component — a real, common component used by several popular RGB and peripheral-control software packages.
What's actually causing the conflict
The real, technical root cause is a conflict between the updated Windows components and the specific driver component many RGB lighting utilities rely on to control lighting hardware — not a problem with gaming itself, but with a shared, lower-level system component several unrelated lighting products happen to depend on.
The real, current fix
Microsoft has issued a temporary, registry-based workaround while a fuller fix is investigated — a genuinely common pattern for this kind of driver-level conflict, where a quick, real mitigation ships ahead of a more permanent resolution.
If you've experienced unexplained game crashes since installing this update and use RGB lighting software, this is a real, confirmed, known cause — worth checking Microsoft's own support documentation for the current, official workaround rather than assuming a hardware fault.
Source: www.bleepingcomputer.com