Major bug in Windows 11 has users suddenly seeing red | usagoldmines.com

According to a report by Windows Latest, some Windows 11 users are seeing red… literally. Apparently there’s a bug that’s causing Windows 11 to shade games and videos with a red cast on some PCs.

Microsoft has already confirmed the problem: “After you install KB5064081, some videos and games might be unexpectedly red.” However, Microsoft doesn’t explain exactly what this means and what games or videos are affected. It could be that a bug in Windows 11 affects the color rendering of the operating system, especially when it tries to adjust colors and increase brightness in HDR.

The red cast problem occurs with certain videos and games after users install specific recent updates, most notably the optional KB5064081 update released in August. However, Microsoft has released a fix for the red cast problem with the more recent KB5067036 optional update. Microsoft intends to fix the red cast problem for all users on the upcoming Patch Tuesday for November 2025.

More bugs in Windows 11

The KB5067036 update fixes the red cast issue, and it might bring some new features and improvements like the newly redesigned Start menu, but it also fixes a few other problems.

According to Windows Latest, Microsoft also confirmed another bug in the latest Windows update that results in only certain parts of the screen being updated if a full-screen app or game is running in the background. “Apps and browsers might display partially unresponsive onscreen content when other maximized or full-screen apps are updating in the background. This issue is especially noticeable when scrolling, as only parts of the window content might update,” Microsoft confirmed.

However, update KB5067036 isn’t entirely free of problems itself. For example, it introduces a new bug where Task Manager doesn’t properly close. If you don’t care for the redesigned Start menu or the specific bugs fixed by it, maybe hold off until the next mandatory update.