Solved
Changing the HTTPS port and web service certificate
Will there be any impact if i change the HTTPS port to any other number. eg 6443 and change web service certificate to Fortinet Local cert ?

Will there be any impact if i change the HTTPS port to any other number. eg 6443 and change web service certificate to Fortinet Local cert ?

This configuration only affects the access to the device. You will have to use new port number and accept the new certificate (Need to add the Root CA certificate on your PC/Browser if it is not a well known CA).
You may also need to check if there are any local-in policies configured for port 443 and modify them to match with new port number.
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