#Replication

2 guides

How to Fix SYSVOL and NETLOGON Missing on a Domain Controller

SYSVOL or NETLOGON missing on a domain controller? Learn to diagnose DFSR vs FRS, check the shares, and run authoritative or non-authoritative sync to recover.

MCSA Guru Team Jun 9, 2026 8 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