Certificate Private Key Inaccessible Error

Microsoft.ActiveDirectoryFederationServices2012R2.TokenIssuanceCertPrivateKeyInaccessibleErrorMonitor (UnitMonitor)

Knowledge Base article:

Summary

This monitor indicates that the service account that is associated with the AD FS Windows service does not have permission to the private key of the token-signing certificates or the token-decrypting certificates that are configured in the AD FS configuration database.

Causes

The AD FS service account does not have permissions to read the private keys for the configured certificates.

Resolutions

Ensure that the AD FS service account has read permissions on the certificate private keys. For more information, see "Confirm that private keys for certificates are accessible by the AD FS service user account" section in the AD FS troubleshooting guide.

Element properties:

Target

Microsoft.ActiveDirectoryFederationServices2012R2.TokenIssuance

Parent Monitor

System.Health.ConfigurationState

Category

ConfigurationHealth

Enabled

True

Alert Generate

True

Alert Severity

Error

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.Windows.2SingleEventLog2StateMonitorType

Remotable

True

Accessibility

Public

Alert Message

Certificate Private Key Inaccessible Error

Token issuance failed because the service account that the AD FS Windows Service uses does not have permission to the private key of its token-signing certificates and/or its token-decrypting certificates.

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.ActiveDirectoryFederationServices2012R2.TokenIssuanceCertPrivateKeyInaccessibleErrorMonitor" Accessibility="Public" Enabled="true" Target="Microsoft.ActiveDirectoryFederationServices2012R2.TokenIssuance" ParentMonitorID="Health!System.Health.ConfigurationState" Remotable="true" Priority="Normal" TypeID="Windows!Microsoft.Windows.2SingleEventLog2StateMonitorType" ConfirmDelivery="true">

  <Category>ConfigurationHealth</Category>

  <AlertSettings AlertMessage="Microsoft.ActiveDirectoryFederationServices2012R2.TokenIssuanceCertPrivateKeyInaccessibleErrorMonitor_AlertMessageResourceID">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

  </AlertSettings>

  <OperationalStates>

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

    <OperationalState ID="SecondEventRaised" MonitorTypeStateID="SecondEventRaised" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

    <FirstComputerName>$Target/Host/Host/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</FirstComputerName>

    <FirstLogName>$Target/Host/Host/Property[Type="Microsoft.ActiveDirectoryFederationServices2012R2.FederationServer"]/ADFSEventLog$</FirstLogName>

    <FirstExpression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="UnsignedInteger">387</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <RegExExpression>

            <ValueExpression>

              <XPathQuery Type="String">PublisherName</XPathQuery>

            </ValueExpression>

            <Operator>MatchesMOM2005RegularExpression</Operator>

            <Pattern>(^AD FS$)</Pattern>

          </RegExExpression>

        </Expression>

      </And>

    </FirstExpression>

    <SecondComputerName>$Target/Host/Host/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</SecondComputerName>

    <SecondLogName>$Target/Host/Host/Property[Type="Microsoft.ActiveDirectoryFederationServices2012R2.FederationServer"]/ADFSEventLog$</SecondLogName>

    <SecondExpression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="UnsignedInteger">388</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <RegExExpression>

            <ValueExpression>

              <XPathQuery Type="String">PublisherName</XPathQuery>

            </ValueExpression>

            <Operator>MatchesMOM2005RegularExpression</Operator>

            <Pattern>(^AD FS$)</Pattern>

          </RegExExpression>

        </Expression>

      </And>

    </SecondExpression>

  </Configuration>

</UnitMonitor>