How to cast samsung a12 to tvRADIUS MTU Issues for Microsoft NPS. Hi All, Been working on this for ages and cant find the fix. We use a PA820 and RADIUS authentication for Globalprotect, the MS radius server in turn uses Azure MFA. The whole thing works, but not every time, maybe 1 in 3 attempts. The other attempts show "Authentication failed due to an EAP session timeout ...R2bes1x.phphesixa1) User attempts to make connection and radius authentication is used. 2) Radius Auth request triggers a phone call to user. 3) User picks up phone (X seconds later) and authenticates the session request. 4) Radius auth successful (or failure) is sent back from the request in step #2. This all works fine in relation to the backend requests for ...