Announcing Windows 11 Insider Preview Build 26200.5551 (Dev Channel)

Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 26200.5551 (KB5055617) to the Dev Channel.

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Announcing Windows 11 Insider Preview Build 26120.3863 (Beta Channel)

Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 26120.3863 (KB5055613) to the Beta Channel for Windows Insiders on Windows 11, version 24H2.

Changes in Beta Channel b

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Releasing Windows 11 Build 26100.3902 to the Release Preview Channel

Hello Windows Insiders, today we’re releasing Windows 11 Build 26100.3902 (KB5055627) to Insiders in the Release Preview Channel on Windows 11, version 24H2 (Build 26100).

Below i

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Significant performance improvements with Edge 134

We’re very proud to say that, starting with version 134, Microsoft Edge is up to 9% faster as measured by the Speedometer 3.0 benchmark.

With every release of Microsoft Edge, we care about delivering better performance, so that you can spend less ti

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Stopping attacks against on-premises Exchange Server and SharePoint Server with AMSI

Exchange Server and SharePoint Server are business-critical assets and considered crown-jewels for many organizations, making them attractive targets for attacks. To help customers protect their environments and respond to these attacks, Exchange Server and SharePoint Server integrated Windows Antimalware Scan Interface (AMSI), providing an essential layer of protection by preventing harmful web requests from reaching backend endpoints. The blog outlines several attacks prevented by AMSI integration and highlights recent enhancements. The blog also provides protection and mitigation guidance and how defenders can respond.

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Save the date: Annual Xbox Games Showcase livestreams June 8

Every year, the Xbox Games Showcase delivers a sneak peek at upcoming first-party and third-party partner studio titles. This summer, the show will be digital-only.

And, it’s going to be a double feature, with new gameplay, details, and developer

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Copilot on Windows: Vision and file search begin rolling out to Windows Insiders

Hello Windows Insiders, we are beginning to roll out an update for the Microsoft Copilot app on Windows via the Microsoft Store which introduces the following changes and improvements:

File search: You can now find, open and ask que

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Exploitation of CLFS zero-day leads to ransomware activity

Microsoft Threat Intelligence Center (MSTIC) and Microsoft Security Response Center (MSRC) have discovered post-compromise exploitation of a newly discovered zero-day vulnerability in the Windows Common Log File System (CLFS) against a small number of targets. Microsoft released security updates to address the vulnerability, tracked as CVE 2025-29824, on April 8, 2025.

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