Turn on the password complexity requirement

Microsoft.Windows.Server.Essentials.PasswordComplexityConflict (UnitMonitor)

Knowledge Base article:

Summary

This monitor detects the following critical alert on the server that is monitored: Turn on the password complexity requirement

Causes

The server that is monitored raised an critical alert.

Resolutions

To resolve this issue, you should turn on the password complexity requirement.

1. Open the Group Policy Management Administrative Tool, and then expand your domain.

2. Right click Default Domain Policy, and then click Edit.

3. In Group Policy Management Editor, navigate to Computer Configuration | Policies | Windows Settings | Security Settings | Account Policies | Password Policy.

4. Change the Password must meet complexity requirements policy to Enabled.

Element properties:

TargetMicrosoft.Windows.Server.Essentials.ComputerTHClass
Parent MonitorSystem.Health.AvailabilityState
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
Alert Auto ResolveTrue
Monitor TypeMicrosoft.Windows.2SingleEventLog2StateMonitorType
RemotableTrue
AccessibilityPublic
Alert Message
Turn on the password complexity requirement

To resolve this issue, you should turn on the password complexity requirement.
1. Open the Group Policy Management Administrative Tool, and then expand your domain.
2. Right click Default Domain Policy, and then click Edit.
3. In Group Policy Management Editor, navigate to Computer Configuration | Policies | Windows Settings | Security Settings | Account Policies | Password Policy.
4. Change the Password must meet complexity requirements policy to Enabled.
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.Windows.Server.Essentials.PasswordComplexityConflict" Accessibility="Public" Enabled="true" Target="Microsoft.Windows.Server.Essentials.ComputerTHClass" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Windows!Microsoft.Windows.2SingleEventLog2StateMonitorType" ConfirmDelivery="true">
<Category>AvailabilityHealth</Category>
<AlertSettings AlertMessage="Microsoft.Windows.Server.Essentials.PasswordComplexityConflict_AlertMessageResourceID">
<AlertOnState>Error</AlertOnState>
<AutoResolve>true</AutoResolve>
<AlertPriority>Normal</AlertPriority>
<AlertSeverity>Error</AlertSeverity>
<AlertParameters>
<AlertParameter1>$Data/Context/EventDescription$</AlertParameter1>
</AlertParameters>
</AlertSettings>
<OperationalStates>
<OperationalState ID="FirstEventRaised" MonitorTypeStateID="FirstEventRaised" HealthState="Error"/>
<OperationalState ID="SecondEventRaised" MonitorTypeStateID="SecondEventRaised" HealthState="Success"/>
</OperationalStates>
<Configuration>
<FirstComputerName>$Target/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</FirstComputerName>
<FirstLogName>Microsoft-Windows-ServerEssentials/Admin</FirstLogName>
<FirstExpression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="UnsignedInteger">1280</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">Microsoft-Windows-Windows Server</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Params/Param[1]</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">PasswordComplexityConflict</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Params/Param[2]</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">$Target/Property[Type="Windows!Microsoft.Windows.Computer"]/NetbiosComputerName$</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</FirstExpression>
<SecondComputerName>$Target/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</SecondComputerName>
<SecondLogName>Microsoft-Windows-ServerEssentials/Admin</SecondLogName>
<SecondExpression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="UnsignedInteger">1283</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">Microsoft-Windows-Windows Server</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Params/Param[1]</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">PasswordComplexityConflict</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Params/Param[2]</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">$Target/Property[Type="Windows!Microsoft.Windows.Computer"]/NetbiosComputerName$</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</SecondExpression>
</Configuration>
</UnitMonitor>