Here's what we got from Meraki Support: Greetings, Thank you for contacting Cisco Meraki Technical Support. I would like to inform you that we are aware of the recent issue where a Microsoft update is being flagged as malicious by the AMP service on the MX platform. Our development team has been alerted and is currently investigating the matter. For updates on the progress of the investigation, please refer to this link: https://community.meraki.com/t5/Security-SD-WAN/MX-Malware-Blocking/m-p/191266#M44553. We will keep this thread updated as soon as we have more information on whether this is a false positive or not. Thanks, Jason Wu Cisco Meraki Technical Support
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