Invalid LDAP server: Timed out |and | Invalid LDAP server: Can't contact LDAP server

[FidelM]

Hi I'm running a fortigate 80C and from one of our site we keep getting the invalid server timed out and can't contact LDAP server  error message when trying to test.

Can you kindly assist.

Thank you

[MikePruett]

Have you had LDAP working on this particular device before?

Usually, if it is working and then suddenly stops, in my experience, it is because the service account that is binding the Gate to the AD has an expired password etc.