Added the following registry entry to the NPS server
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\RasMan\PPP\EAP\13
New REG_DWORD named TlsVersion
Changed the Value to 0xf00 which sets tls to 1.1 and 1.2 otherwise it could be set as below.
- TLS 1.0 0xC0
- TLS 1.1 0x300
- TLS 1.2 0xC00
Restart the EapHost service and re-test the connection.