The update fixes 570 flaws in the OS, almost three times as many as it did in June.
Microsoft’s Patch Tuesday release this week has more bug fixes than any of its Windows updates in the past couple of years, continuing the upward trend in 2026. As Windows Latest reports, this update fixed 570 flaws in the OS, close to three times as many as it did in June and over four times the number of fixes it released in July 2025.
This year, Microsoft has made a stronger push to improve the Windows experience amid user complaints, competition from SteamOS, and lagging PC sales due to the memory crunch. It recently released a useful performance update for the operating system and moved to clear up the clutter. Now, its latest Patch Tuesday release is full of bug and exploit fixes.
The patch fixes security vulnerabilities in Win32K, NTFS, Remote Desktop, Hyper-V, Secure Boot, Print Spooler, Media Foundation, the Windows installer, and the Windows kernel itself, among others. The update should also make shutdowns faster, improve File Explorer reliability and performance, and let you resize the touchpad right-click zone.
Why is Microsoft finding so many flaws in Windows all of a sudden? If its own claims of increased efforts are to be believed, it’s because it’s trying harder. But it’s also been leaning on the power of AI. Its internal bug-hunting AI is MDASH. Like Anthropic’s Fable and other cybersecurity-focused AI, MDASH uses AI agents to scan software and services for exploits, then attempts to engineer a vector to attack them. Microsoft can then patch that flaw using a mix of human and AI tools.
Microsoft claims it’s also finding more flaws because bad actors are using AI to find them, making these kinds of security updates all the more important.