Quote:Microsoft's Windows 11 preview update KB5079391, released on March 26, adds support for display refresh rates above 1,000Hz, with internal documentation confirming the limit extends to 5,000Hz. The update was removed by Microsoft on March 27 after some installation issues were found. The improvements listed are expected to be available to users in a future release.

The update applies to Windows 11 versions 25H2, 24H2, and 26H1.

According to a post by Blur Busters, which was the first to identify support for 5,000Hz refresh rates, the site's founder Mark Rehjon helped convince Microsoft to raise the maximum refresh rate to that level. Microsoft's update notes simply mention support for "refresh rates above 1,000Hz" without specifying an upper limit.

Display And UI Changes In Windows 11 Update KB5079391

In addition to supporting higher refresh rates, the update brings several other changes related to display performance: It improves auto-rotation and HDR reliability, and enhances power efficiency for monitors connected via USB4

The update also introduces detailed image descriptions for Copilot and Copilot+ PCs when using Narrator. Additionally, the design of dialog boxes in the Accounts settings menu has been adjusted in the Other section.

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