Malwarebytes Users Encounter Google Chrome Compatibility Issues Due to Windows 11 KB5027231 Update

Malwarebytes has confirmed that the recent Windows 11 22H2 KB5027231 cumulative update, released during Patch Tuesday, is causing compatibility problems for Google Chrome on its customers’ systems.

Users and Windows administrators have reported that their devices are experiencing issues after installing the Windows 11 updates from the previous day.

While uninstalling the KB5027231 update resolves the problem, administrators have encountered difficulties doing so via WSUS (Windows Server Update Services) due to a “catastrophic error” message.

One administrator shared their experience, stating, “I rolled out KB5027231 to multiple users, and now Chrome is broken everywhere. When attempting to rollback via wusa, it shows a ‘catastrophic error’ in the Event Viewer, and WSUS indicates that rolling back is not possible.”

The issue seems to affect a portion of the machines that received the patch, with the same administrator reporting around 30 affected devices out of the 400 that received the update.

Although the Google Chrome process is running, it fails to launch fully and load the user interface due to the conflict.

Malwarebytes has confirmed that their anti-exploit module is responsible for blocking Chrome from loading after installing the KB5027231 update. In a support article, they acknowledge the conflict between Malwarebytes and Google Chrome, specifically occurring when the June 2023 Patch Tuesday updates are installed on Windows 11 systems.

To address the issue, Malwarebytes advises users experiencing problems with launching Google Chrome to disable the web browser from the list of protected applications in their Malwarebytes product settings. This can be done by navigating to Settings > Security tab > Manage protected applications.