KB5099548: Overview with user sentiment and feedback

Overview

KB5099548 is a Safe OS Dynamic Update released on July 14, 2026, for Windows 10 version 1607 and Windows Server 2016. This patch enhances the Windows Recovery Environment (WinRE) and addresses a critical OLE Automation compatibility issue that was introduced by the June 2026 security update. The update is only available through the Microsoft Update Catalog and does not require a system restart.

General Purpose

• Improves Windows Recovery Environment (WinRE) functionality and stability
• Resolves OLE Automation (oleaut32.dll) compatibility issue affecting COM method calls with BYREF parameters
• Corrects parameter ownership management to restore proper application behavior
• Fixes parameter marshaling errors and automation call failures in affected applications
• Replaces the previously released update KB5094152

General Sentiment

This patch addresses a specific compatibility regression introduced by the June 2026 security update, making it a targeted fix rather than a broad feature release. The update targets a narrow but important issue affecting applications using OLE Automation, particularly those relying on IDispatch::Invoke method calls. With no reported community discussions or negative sentiment identified, the patch appears to be a straightforward maintenance update focused on restoring expected application behavior for affected users.

Known Issues

Disclaimer: We take measures to ensure that AI-generated content is of the highest possible quality, but we cannot guarantee its accuracy and recommend that users do their own independent research. Generated on 2026-08-18 01:22 PM

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