LDAP authentication stopped working after upgrading to v7.4.12
Hi everyone,
I recently upgraded two edge firewalls (200F) from FortiOS 7.2.12 to 7.4.12. The first firewall upgraded without any issues, but on the second one I ran into a strange LDAP authentication problem.
After the upgrade, LDAP users can no longer log in to the firewall GUI/CLI — it just returns “authentication failed.”
What’s confusing is:
-I can still log in locally with the admin account
-The LDAP configuration looks correct
-Connectivity seems fine
-“Test Authentication” succeeds successfully.
So everything appears normal, except the actual login using LDAP accounts.
Has anyone experienced something similar after upgrading to 7.4.12?
I already opened a ticket with Fortinet support and I’m waiting for their feedback, but I’d appreciate hearing if anyone here has seen this before or found a workaround.
Many thanks.