- Working in Microsoft Active directory issues with professional customers - Working on ADLDS, Adfs - Working ADCS ( Active directory Certificate Services) - Working on AGPM and FSMT. - In-depth knowledge of Active Directory - Dealing with issue “Frequent Account Lockout source identification, Authentication, Object migration, AD replication, slow logon, terminal server licensing etc. - Good knowledge of Group policy, working on issues related to group policy - Knowledge of Kerberos, SPN’s, Kerberos Double hop - Working on PKI Issues - Working on DNS, Replication of AD - Working on User profiles issues.