PDF Previews and Bluetooth Get the Real Fixes
File Explorer can preview downloaded PDFs again. Since October 2025, security measures had blocked previews of any file that came from the internet, PDFs included. HTML files still trigger a warning, but it now comes with a Preview anyway
button.
Bluetooth on Windows 11 gets its most significant update in years. Microsoft addressed a long list of stability issues, including volume synchronization problems and incorrect device connection states. Reliability also improves for Bluetooth LE Audio accessories and Shared Audio.
Two smaller changes round out the release:
- The dedicated Copilot key can now be remapped to Right Ctrl or the Context Menu key through Settings, which helps anyone who would rather not use Copilot.
- A new accessibility setting opens all supported apps maximized by default. It lives under Settings > Accessibility > Visual effects.
24H2 Home and Pro Lose Support, and a Boot Certificate Is Next
Support for Windows 11 24H2 Home and Pro officially ended on , so this update is the last one those PCs will get. After that date, they receive no security patches, bug fixes, or technical support. Enterprise and Education editions of 24H2 stay supported until .
Anyone still on 24H2 Home or Pro should install Windows 11 26H2. It arrives as a small enablement package because 24H2, 25H2, and 26H2 share a codebase. Internal testing also suggests 26H2 shipped with an unadvertised performance boost.
The second deadline involves Secure Boot certificates. Certificates used by many Windows PCs began expiring in June 2026, and Microsoft is still rolling out replacements. The Microsoft Windows Production PCA 2011 certificate, which signs the Windows boot loader, expires on October 19. You can check your status under Windows Security > Device security > Secure Boot, and keeping Windows Update enabled is how the new certificates arrive.
Hashlytics Take
Patch Tuesday coverage tends to lead with whatever users can see, which here means PDF previews and Bluetooth. The more consequential items are the invisible ones: a support cutoff that already happened on October 13 and a boot loader certificate expiring on October 19. Neither will pop up a notification demanding attention. A two minute check of your Windows version and your Secure Boot status is the sensible response, no panic required.
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