Microsoft has officially acknowledged a Windows Firewall issue affecting users who installed the June 2025 preview update. The company has issued guidance advising administrators and users to disregard the error messages as they do not compromise system security functionality or indicate actual security threats.
Understanding Event 2042 Error Details
The problematic notifications appear in the Windows Event Log as Event 2042 for the Windows Firewall with Advanced Security service. Users report seeing error messages including “Config Read Failed” and “More data is available”, which can understandably cause concern about system security integrity.
According to Microsoft’s official statement, the issue stems from an experimental feature currently under active development. This feature has not been fully integrated into the operating system, resulting in false positive warnings being generated in the event log. The experimental nature of this functionality explains why users are experiencing these misleading alerts.
KB5060829 Update Impact Scope
The security alert issue exclusively affects systems running Windows 11 version 24H2. Users operating earlier versions of the Windows operating system will not encounter these specific firewall errors. This targeted impact suggests the experimental feature is only present in the latest Windows 11 build.
Microsoft emphasizes that despite the appearance of Event 2042 warnings, Windows Firewall functionality remains completely operational. The security system continues providing protection against external threats and monitoring network traffic without any functional degradation or security gaps.
Microsoft’s Official Response
In the company’s official communication, Microsoft stated: “After installing the June 2025 non-security preview update (KB5060829), a Windows Firewall With Advanced Security error event may appear in the security event log that can be safely ignored.”
The development team confirms that no additional remediation actions are required from users or administrators. Microsoft’s engineering team is actively working on resolving the issue and promises to provide updated information shortly through their standard communication channels.
Recent Windows Update Challenges Context
This incident represents part of a broader pattern of Windows update-related issues that have emerged in recent months. Users have frequently encountered various problems with system updates that generate false warnings and error messages, creating unnecessary concern about system security.
In April 2025, Microsoft resolved a significant BitLocker encryption issue that affected both Windows 10 and Windows 11 devices. Simultaneously, the company addressed problems with error code 0x80070643 that occurred following April updates to the Windows Recovery Environment (WinRE).
Security Professional Recommendations
Cybersecurity experts recommend maintaining calm when discovering Event 2042 errors in system logs. Understanding that these warnings do not indicate system compromise or require emergency response measures is crucial for appropriate incident response.
For enterprise environments, IT personnel should be informed about this issue’s nature to prevent unnecessary investigations and avoid triggering security team alerts. System monitoring should continue normally while recognizing the temporary nature of these false positives.
While Microsoft addresses the Event 2042 issue, organizations must maintain comprehensive cybersecurity practices. Regular antivirus updates, email security awareness, and adherence to fundamental digital hygiene principles remain essential for protection against legitimate security threats. This temporary logging issue should not distract from ongoing security vigilance and proper threat detection protocols.
