Hi All, We have a Ubuntu AD on version 4.7.6 and are trying to implement Office 365. We have been able to configure so far - Password sync - Filtering users in certain OUs in AD to Azure AD What we can't get to work is seamless SSO. Initially we installed the Azure AD sync in a server 2012 (AD member server) and tried to run the SSO, it comes up with "An error occurred locating computer account" . Then as a test we added a 2008R2 server and promoted it as DC. We ran the same steps and got the same message. Through powershell we get "directory service is unavailable" error. We then ran a netmon trace on the 2008R2 box when running the powershell bits and it seems to be connecting to the Ubuntu server. It seems to using GSS-SPNEGO LDAPSASLBuffer: BufferLength: 102, AuthMechanism: GSS-SPNEGO The smb.conf looks like [global] workgroup = LIN realm = LIN.GROUP netbios name = SERVER5 server role = active directory domain controller idmap_ldb:use rfc2307 = yes log file = /var/log/samba/log.%m log level = 4 winbind nss info = rfc2307 acl allow execute always = True server services = -dns allow dns updates = nonsecure and secure ldap server require strong auth = no client ldap sasl wrapping = plain We have logged a call with Microsoft Azure support. Any thoughts? Regards, Praveen Ghimire