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When configuring the Sophos Central Active Directory Sync Utility, you are continually re-prompted for the LDAP credentials. When looking in the 'Sophos Central AD Sync' Windows Event log you see the error:
Failed active directory synchronization. Reason: SophosADSync.NeedADCredsException: Invalid LDAP credentials ---> System.DirectoryServices.Protocols.LdapException: The LDAP server is unavailable. at System.DirectoryServices.Protocols.LdapConnection.Connect() at System.DirectoryServices.Protocols.LdapConnection.BindHelper(NetworkCredential newCredential, Boolean needSetCredential)
First seen in Sophos Central Admin
The most likely cause is that Secure LDAP is not available on the DC the utility is connecting to.
After ensuring the following information is entered correctly:
Ensure that the DC being connected to is presenting a certificate on the chosen port.
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