Active Directory replication DCPromo and the installation of domain controllers Active Directory backup, restore, or disaster recovery Active Directory database issues and domain controller boot failures Domain join issues User, computer, group, and object management Group Policy Account lockouts Domain and forest trusts Kerberos authentication Permissions, access control, and auditing Secure channel issues Folder redirection Offline files (client-side caching) Slow logon Access to file shares (DFS namespace) File Replication Technologies (FRS and DFSR) Application technologies (such as COM, COM+, or DTC) and compatibility .NET Framework installation Configuring and using Windows Backup or other recovery Bug checks, Stop errors, and unexpected restarts Drivers and Hardware\Driver installation or driver update Print spooler causes high CPU utilization Print spooler crashes and hangs Remote Desktop Services and Terminal Services Security Updates, Suspected Malware, and Safety Installing: service pack, windows, server roles, updates. Issues with unattend.xml and Sysprep WMI base functionality Virtualization and Hyper-V Windows Desktop, User Logon, and User Profiles Windows Security Technologies (Bit locker)