#Domain Controller

3 guides

How to Back Up and Restore Active Directory Using System State Backup

Protect your domain with a proper Active Directory system state backup. Learn wbadmin backups, DSRM, authoritative vs non-authoritative restore, and why snapshots aren't enough.

MCSA Guru Team Jun 16, 2026 8 min read

Diagram-style cover showing the five FSMO roles split across forest-wide and domain-wide scopes, with arrows for transfer and seize between two domain controllers

Pillar Guide

Windows Server & Active Directory

How to Transfer or Seize FSMO Roles in Active Directory

Learn the 5 FSMO roles, when to transfer them gracefully vs seize them after a DC failure, and how to do both with ntdsutil and PowerShell — safely.

MCSA Guru Team Jun 2, 2026 10 min read

Diagram-style cover: a source domain controller reaching a target DC through DNS, the RPC endpoint mapper on port 135, and the dynamic RPC port range

Pillar Guide

Windows Server & Active Directory

How to Fix Active Directory Replication Error 1722: The RPC Server Is Unavailable

A practical, step-by-step guide to diagnosing and fixing Active Directory replication error 1722 — the RPC server is unavailable — from DNS to firewall to RPC ports.

MCSA Guru Team May 20, 2026 7 min read