GoKawiilMicrosoft has released Windows 11 KB512103 and KB5120240 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features.
Today's updates are mandatory as they contain the August 2026 Patch Tuesday security patches for 400 vulnerabilities discovered in previous months.
You can install today's update by going to Start > Settings > Windows Update and clicking on 'Check for Updates.'
You can also manually download and install the update from the Microsoft Update Catalog.
This is the eighth 'Patch Tuesday' release in 2026, and it's based on 24H2, which means 25H2 gets the same update. There are no exclusive or special changes. You'll get the same fixes across the two versions of Windows 11.
What's new in the August 2026 Patch Tuesday update
With today's update, Microsoft is making Windows Search better at typos and rolling out multiple performance-related fixes, but the catch is that most changes don't show up right away.
Here's the full list of improvements and fixes:
File Explorer File sizes in the Details view now display using appropriate units (KB, MB, GB) instead of KB-only, making them easier to understand at a glance. Middle click to open a folder in a new tab is now supported in the Address Bar and the Home page for a more consistent and efficient tabbed navigation experience across File Explorer. This update eliminates a grey flash on load and unexpected scrolling to the top on the Home page in certain cases. This update improves the appearance of file thumbnails in the Recommended section on the Home page so they’re crisper and easier to read.
Windows Search This update improves app search to better handle typos and partial app names when finding installed apps. This update improves Settings relevance to surface more useful settings higher in search results.
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