Microsoft rolls out Windows 11 Insider builds featuring a built-in network speed test, Emoji 16.0, shared audio controls, and stronger batch file security.

Windows 11’s February 2026 Insider update is live, and it brings a fresh round of new features and changes for testers.

Dark Mode has its drawbacks. For example, the worksheet grid usually remains white. You can choose Black under Office Theme, which activates a Dark Mode toggle in the View tab of your Excel ribbon.

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