|Description||This article describes why FortiGate Radius authentication may fail with Microsoft NPS as Radius server.|
The setup is as follow:
1. FortiGate is configured as Radius Client.
2. Microsoft NPS is configured as a Radius server.
3. Following details are being used to log in:
When trying to use accented characters as above in the password, the authentication fails.
 __fnbamd_rad_send-Sent radius req to server 'Rad_server': fd=14, IP=10.10.1.193(10.10.1.193:1812) code=1 id=17 len=181 user="test" using MS-CHAPv2
This is a limitation for the Microsoft NPS where accented characters if used in passwords will lead to this limitation.
Note: If using Microsoft NPS with FortiGate as Radius server, it is advised to not use any accented characters in the password.