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Active Directory health check: service scope

Sign-in, name resolution and directory replication issues can affect everyday services. This guide outlines the architecture, roles, sites and related settings considered in an Active Directory health check, helping administrators prepare environment information and discuss improvement priorities using a clear assessment scope.

Service scope, not assessment findings

These assessment areas help you identify the environment and issues to review. They are not findings from a specific customer environment. Agree scope, access, test windows and deliverables before work begins.

Directory infrastructure

Review domain controller distribution, FSMO roles, Global Catalog and site/subnet configuration.

Replication health

Review replication status, latency, topology and site links to identify issues for investigation.

DNS and time synchronization

Review AD-related DNS records, stale-record cleanup and the time synchronization hierarchy.

Accounts and permissions

Review privileged groups, account policies, Kerberos settings and account hygiene.

Performance and capacity

Review SYSVOL, NETLOGON, database growth, disk space and event log configuration.

Backup and maintenance

Review System State backups, restore tests, object cleanup and maintenance. Validate backup usability and retention against the environment.

Updates and functional levels

Review OS versions, update status and forest/domain functional levels against applicable version requirements.

Getting started

Share versions, an architecture overview and current issues to discuss an assessment. Remediation and changes follow a separately agreed scope.

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