Cisco have recently updated the definitions for AMP on the Meraki platform. Included in this is the following rule which blocks all NPS traffic. End users experience a constantly disconnecting/reconnecting switch port and/or wifi connection. > OS-WINDOWS Microsoft RADIUS Server invalid access-request username denial of service attempt > **Rule ID:**3-33053 & 3-33053:3 > [cve 2015-0015]( > [cve 2016-0050]( Whitelisting 3-33053 and 3-33053:3 resolves the issue instantly. --- [[Epistemic status|Colophon: Overbrewed]]