Remember the KB5066835 update that went live the day before yesterday?
Windows 11 24H2 / 25H2 October Update KB5066835 Installation Fixes Print Browser Page Preview Freezing Issue
While it fixes the print preview problem, as expected, it brings new unexpected issues.
Some Windows 10 users may experience the same symptoms after installing the final update.
Windows 10 Final Update KB5066791 – Windows 10 Support Ends After This
Yep! This is pretty typical.
After installing this update,
when previewing Office or PDF files in File Explorer, you'll see this screen.
![[教學] 如何修正 Windows 11 25H2 安裝 K [教學] 如何修正 Windows 11 25H2 安裝 K](https://imageproxy.pixnet.cc/imgproxy?url=https://pic.pimg.tw/showmer/1760632280-3967974340-g.jpg&ver=20250714)
This issue occurs on every 25H2 system after installing KB5066835 (24H2 cases are rare so far).