Recently trying to diagnose an issue with Radius 2fa, looking at the AzuraMFA Logs , I saw users trying to Authenticate with Mandarin Characters per below

Wondering if it was chinese hackers  , I tried a simple test using a username that does not exist in AD , which actually produces this for each login, so not to worry! 

NPS Extension for Azure MFA: NPS Extension for Azure MFA only performs Secondary Auth for Radius requests in AccessAccept State. Request received for User

NPS Extension for Azure MFA: NPS AuthN extension bypassed for User