Office Insiders can try out the mica blur effect in Microsoft Word on Windows 11

Mica is an effect similar to the acrylic blur, but it’s less resource-intensive because it samples from a PC’s wallpaper rather than any apps behind an active window. The effect is seen on several apps on Windows 11, including the File Explorer and the Settings app.

Here’s Microsoft’s description of mica from a support document (emphasis added):

Mica is an opaque, dynamic material that incorporates theme and desktop wallpaper to paint the background of long-lived windows such as apps and settings. You can apply mica to your application backdrop to delight users and create visual hierarchy, aiding productivity, by increasing clarity about which window is in focus. Mica is specifically designed for app performance as it only samples the desktop wallpaper once to create its visualization.

It appears that the mica effect is rolling out gradually, even to Insiders. Some Insiders have not seen it even after receiving the most recent update to Word.

If you’d like to check out the mica blur in Word and other preview features in Office, follow our guide on how to enroll in the Office Insider program.