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Version: 2.2.1-preview

AD-DNS-15 - Duplicate zone count should be retrievable

Michael SouleMerill Fernando
Contributed by Michael Soule with Merill FernandoAll contributors →

Overview​

Duplicate or conflict DNS zones (indicated by CNF: or InProgress- prefixes) indicate:

  • Replication conflicts: The same zone was created on multiple DCs simultaneously
  • Incomplete operations: Zone creation started but did not complete
  • Directory issues: Potential problems with Active Directory replication
  • Configuration drift: Inconsistent state across domain controllers

These zones should be investigated and resolved to ensure consistent DNS behavior.

Security Recommendation​

  • Investigate all duplicate/conflict zones immediately
  • Resolve replication conflicts following Microsoft guidance
  • Verify zone consistency across all DNS servers
  • Monitor for future conflict creation

How the Test Works​

This test identifies zones with names containing " CNF:" or "..InProgress-" prefixes, which indicate replication conflicts or incomplete operations.

  • None currently

Test Metadata​

FieldValue
Test IDAD-DNS-15
SeverityInfo
SuiteActive Directory
CategoryAD.DNS
PowerShell testTest-MtAdDnsDuplicateZoneCount
TagsAD, AD-DNS-15, AD.DNS

Source​

  • Pester test: tests/ad/dns/Test-MtAdDnsDuplicateZoneCount.Tests.ps1
  • PowerShell source: powershell/public/ad/dns/Test-MtAdDnsDuplicateZoneCount.ps1