Microsoft Fixes Windows Driver Update Bug Caused by Caching Issue

Microsoft has announced the resolution of a significant issue that led to unintended driver updates being installed on Windows devices, even when users had explicitly configured policies to prevent such automatic installations. The problem, detailed in Microsoft's admin center incident report MO1332784, was attributed to a misconfiguration within the Windows Update caching service.

This caching service error temporarily removed device enrollment information, causing some Windows devices to be incorrectly recognized as non-enrolled. Consequently, driver approval controls, which rely on proper enrollment status, failed to be applied, allowing drivers to be pushed without user consent or administrative oversight. The Intune Support Team also acknowledged the widespread nature of the issue on social media platforms, assuring users that mitigation efforts were underway.

When the issue was first acknowledged on Tuesday, June 2, Microsoft stated, "We've received a report of an issue where users' Windows devices that have configured policies to prevent auto updates are installing drivers." The company reassured customers that the drivers being installed were Microsoft-approved and signed, and did not pose a security threat, aiming to alleviate immediate concerns about system stability or security risks.

To address the problem, Microsoft updated the affected service cache and reinstated the correct enrollment status for the impacted devices. By Wednesday, the company confirmed that the issue had been fully resolved after validating the fix with a subset of affected users. "We've validated that this issue is resolved following impact remediation confirmation from a subset of previously affected users," Microsoft stated in an update.

Microsoft also indicated a commitment to preventing future occurrences, noting, "We're continuing to review how this caching service temporarily dropped Windows device enrollment information to better inform how to detect, prevent, and respond to similar service issues in the future." This suggests a thorough post-mortem analysis to enhance the resilience of their update infrastructure.

While Microsoft has not disclosed the exact number of regions or customers affected, numerous Windows administrators reported dealing with tens of thousands of devices unexpectedly receiving BIOS and driver updates. In many instances, these unsolicited updates led to functional problems, such as audio or video devices ceasing to operate correctly, highlighting the disruptive impact on end-users and IT departments.

This incident follows a pattern of recent update-related issues from Microsoft. In April, the company resolved a problem causing Windows Server 2019 and 2022 systems to upgrade to Windows Server 2025 unexpectedly. Last month, a separate bug was addressed that installed driver updates on Autopatch-managed Windows 11 devices in the EU, despite administrative policies restricting such deployments.

The resolution of this driver update issue underscores the complexity of managing large-scale update systems and the critical importance of robust policy enforcement to maintain user control and system stability. The incident serves as a reminder for organizations to stay vigilant regarding system updates and to have contingency plans in place for unexpected software changes.