Build 26300.7966: Windows Insider Dev Channel, March 2026. Servicing pipeline test requires a restart

Dev Channel Insiders receive a servicing pipeline test with no new content. A restart is required, but the device build version stays the same.

Does it affect you? Applies to: Devices enrolled in the Windows Insider Program in the Dev Channel.

This is a test build for people in the Windows Insider Program. Features in it can change, be removed, or never reach regular Windows releases.

In detail

Other This update adds no new content; it tests the servicing pipeline for Dev Channel builds.¹
Other A restart is required, and the device build version does not change after the update.²

Data sheet · Security · Downloads · Components Click to collapse or expand

Version	Build	Channel
26H2	26300.7966	Dev Channel

No vulnerabilities are listed for this update.

Updated Oct 26, 2026

Cited passages from Microsoft's official notes (2)

1. This update does not include anything new and is designed to test our servicing pipeline for builds in the Dev Channel. blogs.windows.com
2. A restart will be required; device build version will not change post update. blogs.windows.com

Checked automatically: 8 of 8 checks passed, 2 quoted passages

A second AI read the text against the sources: correctness 5/5, clarity 4/5, completeness 5/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake