This quick update is designed to give the latest information on this issue. We’ve reverted the rule to prevent further impact whilst we investigate further. Third Response from Microsoft: We’ve identified that a specific rule was resulting in impact.Second Response from Microsoft: We’re investigating recent changes to the Microsoft Defender service to identify the underlying root cause and formulate a mitigation plan.First Response from Microsoft: We’re reviewing customer report data to determine our next troubleshooting steps.If you have installed KB2267602 update on your devices and have been experiencing the issues, here are some updates related to MO497128 incident:

Patch My PC Sponsored AD KB2267602 Defender Update Tracking MO497128 Incident Microsoft has published a new incident MO497128 confirming that KB2267602 Defender update indeed causes issues to users accessing the application shortcuts on Start Menu and Taskbar. The issues have been reported over Twitter and other social platform by multiple users.

Reports coming in from multiple customers being impacted by this due to attack surface reduction rules. Microsoft has acknowledged this issue by logging an incident ticket ( MO497128) and is working on a fix.Īfter installing KB2267602 version 1.381.2140.0 on a device, the application shortcuts on the Start menu and taskbar are automatically deleted. After installing the latest Defender update, KB2267602, some users are unable to utilize the application shortcuts on the Start menu and taskbar.

Kb2267602