SSL VPN with LDAP Server Certificate Error

[tonym]

Hi everyone,

Does anyone already encountered this error "Incorrect certificate file format for CA/LOCAL/CRL/REMOTE cert." when uploading CA root certificate to fortigate? Certificate is from may lab setup Win Svr 2019 as AD/DNS with enterprise root security authority service installed.

I'm running 6.2.7 fortigate version.  What I'm trying to achieve is to authenticate thru LDAP server my ssl vpn users thru a secure connection.  I'm just wondering since I already achieved it on latest fortigate version 7.0 smoothly without errors.

Am I missing something or any compatibility issues with 6.2.7 versions? Appreciated much your advises and feedback, what causing the error, I'm kinda stock to it. Thank you.