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Nat64 Connectivity

Microsoft.Windows.RemoteAccess.2012.R2.Monitor.DA_NAT64_HEURISTIC_CONNECTION (UnitMonitor)

NAT64 connectivity failed. DirectAccess clients might not be able to access IPv4-only servers in the corporate network.

Knowledge Base article:

Summary

NAT64 connectivity failed. DirectAccess clients might not be able to access IPv4-only servers in the corporate network.

Causes

1. NAT64 is not enabled on the server.

2. The NAT64 server cannot be reached.

3. Web probe addresses cannot be reached.

Resolutions

1. Verify that NAT64 is enabled on the server.

2. For native IPv6 connectivity, verify that the NAT64/DNS64 prefix is configured in the DirectAccess settings.

3. In the Remote Access Server Setup Wizard, ensure that the default NRPT entry points to the internal address of the NAT64/DNS64 server.

Element properties:

TargetMicrosoft.Windows.RemoteAccess.2012.R2.Class.NAT64
Parent MonitorSystem.Health.AvailabilityState
CategoryCustom
EnabledTrue
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
Alert Auto ResolveTrue
Monitor TypeMicrosoft.Windows.RemoteAccess.2012.R2.Monitor.HeuristicMonitorType
RemotableTrue
AccessibilityPublic
Alert Message
Nat64 connectivity failed

Error Description - {0}
Error Cause - {1}
Error Resolution - {2}
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.Windows.RemoteAccess.2012.R2.Monitor.DA_NAT64_HEURISTIC_CONNECTION" Accessibility="Public" Enabled="true" Target="Microsoft.Windows.RemoteAccess.2012.R2.Class.NAT64" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Microsoft.Windows.RemoteAccess.2012.R2.Monitor.HeuristicMonitorType" ConfirmDelivery="true">

  <Category>Custom</Category>

  <AlertSettings AlertMessage="Microsoft.Windows.RemoteAccess.2012.R2.Monitor.DA_NAT64_HEURISTIC_CONNECTION_AlertMessageResourceID">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Data/Context/DataItem/Property[@Name='ErrorDesc']$</AlertParameter1>

      <AlertParameter2>$Data/Context/DataItem/Property[@Name='ErrorCause']$</AlertParameter2>

      <AlertParameter3>$Data/Context/DataItem/Property[@Name='ErrorResolution']$</AlertParameter3>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="UIGeneratedOpStateIda32c09d40b8b44fda0897efad5fb9934" MonitorTypeStateID="Error" HealthState="Error"/>

    <OperationalState ID="UIGeneratedOpStateId68ae689d352c4734b60cd419d5352a95" MonitorTypeStateID="Warning" HealthState="Warning"/>

    <OperationalState ID="UIGeneratedOpStateId1c78f9ac9ca14a5385bb40d3d78725f2" MonitorTypeStateID="Healthy" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

    <Interval>300</Interval>

    <SyncTime/>

    <ComponentName>Nat64</ComponentName>

    <HeuristicId>2147942402</HeuristicId>

  </Configuration>

</UnitMonitor>