#RPC

2 guides

Cover showing a source domain controller being rejected by a target DC during a Kerberos-authenticated replication bind, with an Access Denied stamp

How to Fix Active Directory Replication Error 5: Access Denied

Diagnose and fix Active Directory replication error 5 (Access is denied) — from Kerberos and time skew to RPC sealing policy, secure channel, and UDP fragmentation.

MCSA Guru Team Sep 8, 2026 7 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