Renew freeradius certificate ca.pem


The ca.pem certificate has expired after 2 years. Then the Windows clients cannot connect to the domain in Wifi (EAP-TLS authentication).
We try successfully to:
make ca
in the /etc/freeradius/3/0/certs directory after renaming the expired ca.pem in ca.old.
Then we retstart the freeradius service:
services freeradius stop
services freeradius start
Then we registered the new ca.pem into Windows as usual.

Unfortunatlely, the authentication in the domain by Wifi doesn’t work again.

We miss something. Could you help ?

Thank you by advance