Windows 11 Beta build 26220.7859 arrives with a new Microsoft 365 upgrade prompt in Settings

After releasing two new Windows 11 Release Preview Channel builds for 24H2 and 25H2, Microsoft also released Windows 11 Insider Preview Build 26220.7859 (KB5077223) to the Beta Channel today. The build also applies to the 25H2 version.

The build is light on new features, with most changes focused on reliability improvements. The only novelty is a new Microsoft 365 upgrade prompt for Family plan subscribers, which appears on the Accounts page in the Settings app and can be dismissed by turning off suggested content in Settings.

Here's what's new in this build:

[Account Settings]

• Microsoft 365 Family subscribers will find an option to upgrade to a different 365 plan on the Accounts page within the Settings app. Users can also remove the upgrade option by turning off suggested content in settings.

Windows 11 Insider Preview Build 26220.7859 also fixes several known issues from the previous versions. Here's what's fixed:

[Taskbar]

• Improved reliability of showing app icons in the system tray when the taskbar was set to autohide.

[File Explorer]

• Addressed an issue where all File Explorer open windows and tabs might unexpectedly jump to Desktop or Home.

[Nearby Sharing]

• Improved the reliability of sending larger files using Nearby Sharing.

[Settings]

• Improved reliability of configuring options in Settings > Bluetooth & Devices > Wheel.

No major known issues were highlighted in the announcement, though as always with Insider builds, stability is not guaranteed and bugs may still surface.

Not all Beta Channel users will receive these changes at the same time. Microsoft is rolling them out gradually, starting with Insiders who have enabled the toggle to get the latest updates as they become available under Settings > Windows Update.

You can find the full Windows 11 Insider Preview Build 26220.7859 (KB5077223) changelog on Microsoft's blog.

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Posted Wednesday 18 February 2026 at 12:34 pm AEST (my time).

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