Manage Active Directory Without Logging On to a Domain Controller
Use an admin workstation, RSAT, PowerShell, Microsoft diagnostics, and Sysinternals AD Explorer to manage Active Directory without routine domain controller logons.
Active Directory
Fix 'Trust Relationship Failed' Between PC and Domain
Fix the Windows error The trust relationship between this workstation and the primary domain failed by checking DNS, repairing the secure channel, and rejoining the domain only when necessary.
PowerShell for Office and AD Deployment
PowerShell notes for Office deployment, Office activation firewall rules, Get-ADUser queries, and domain rejoin troubleshooting.