Hi,
I hope you all head some nice days off.

I am running sssd successfully on 1.16.1 and on 1.13.4

Now I have a few old Ubuntu 14.04 machines and I cant get sssd running. Basicially I have the same config as on 1.16.1 and 1.13.4 only threw some parameters out that are not implemented in 1.11.8 yet.
I checked for every parameter I've used in the config if it is existing in this very version and they do when I am not mistaken.

Error is:

(Tue Apr 14 08:43:39:879756 2020) [sssd] [sss_ini_get_config] (0x0010): Failed to parse configuration. Error 5.
(Tue Apr 14 08:43:39:879806 2020) [sssd] [sss_ini_get_config] (0x0010): Errors detected while parsing: /etc/sssd/sssd.conf
(Tue Apr 14 08:43:39:879893 2020) [sssd] [sss_ini_config_print_errors] (0x0020): Error (5) on line 1: Equal sign is missing.
(Tue Apr 14 08:43:39:879913 2020) [sssd] [confdb_init_db] (0x0010): Failed to load configuration
(Tue Apr 14 08:43:39:879942 2020) [sssd] [load_configuration] (0x0010): ConfDB initialization has failed [Input/output error]
(Tue Apr 14 08:43:39:879981 2020) [sssd] [main] (0x0020): SSSD couldn't load the configuration database.


I've found some bug report saying comments should start on the beginng of the line which they are (I also removed all of them)
The first line obviously is [sssd] so I dont get where an equal sign should be missing. Also as said the config is running on other versions aswell...
This is the config I am using for 1.11.8

[sssd]
config_file_version = 2
services = nss, pam, ssh
domains = FOO

[nss]
default_shell = /bin/bash
override_homedir = /home/%d/%u
filter_users = root
filter_groups = root
debug_level = 7

[pam]
debug_level = 7
offline_credentials_expiration = 4

[domain/FOO]
debug_level = 7
case_sensitive = False
cache_credentials = True
account_cache_expiration = 4


ldap_user_extra_attrs = altSecurityIdentities:altSecurityIdentities
ldap_user_ssh_public_key = altSecurityIdentities

id_provider = ldap
auth_provider = ldap
access_provider = ldap
ldap_access_order = filter, expire
ldap_account_expire_policy = ad

ldap_access_filter = (xxx)
ldap_id_mapping = True
ldap_schema = ad


ldap_search_base = OU=xx,DC=xx,DC=xx

ldap_group_nesting_level = 1
ldap_use_tokengroups = False

ldap_tls_cacert = /etc/sssd/root-ca.crt


ldap_uri = ldaps://xxxx:636

ldap_default_bind_dn = CN=xxx
ldap_default_authtok_type = obfuscated_password
ldap_default_authtok = AAAQAGtLXaf5yvs2e00KaMiPq8/FPF/ks97V4TcQmNJGFgQ4xMvg8wSIy54PU7xP09Kf/Z2KcHvcAAQID

ignore_group_members = True
re_expression = (((?P<domain>[^\\]+)\\(?P<name>.+$))|((?P<name>[^@]+)@(?P<domain>.+$))|(^(?P<name>[^@\\]+)$))