RADIUS authentication fails with second factor when the multiple session requests hits the server concurrently
When entering the correct Windows credentials, and correct token response code, users are being prompted with an "Invalid Password, Enter Windows Password" dialog and are unable to complete the authentication successfully.
This has been identified as a defect. A hotfix is available, and the fix will also be included in the next release of Defender.
Submit a service request to Support if you need assistance with this issue.