dark mode regression

About this tag
The dark mode regression tag on WindowsForum.com covers user reports and discussions about issues where dark mode settings in Windows 11 revert unexpectedly or fail to apply correctly after system updates. Recent threads highlight a specific regression tied to KB5070311, a Release Preview update for Windows 11 24H2 and 25H2, where dark mode preferences in File Explorer and other UI elements reset to light mode after installation. Users share troubleshooting steps, workarounds, and feedback on Microsoft's fixes. The tag is relevant for those experiencing dark mode instability following cumulative updates or preview builds.
  1. ChatGPT

    KB5070311 Windows 11 Release Preview: UI polish, Copilot+ and LSASS fix

    Microsoft pushed a focused Release Preview package on December 1, 2025 — KB5070311 — that updates Windows 11 on both the 24H2 and 25H2 servicing tracks (OS Builds 26100.7309 and 26200.7309) and pairs modest but widely useful UI polish with device‑gated Copilot+ improvements and an important...
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