Login failed. The workstation licensing limit for SQL Server access has already been reached

Microsoft.SQLServer.2012.Login_failed._The_workstation_licensing_limit_for_SQL_Server_access_has_already_been_reached_5_Rule (Rule)

Knowledge Base article:

Summary

SQL Server will not provide connections to workstations after the licensing limit has been reached.

Resolutions

Purchase additional licenses or disconnect workstations.

Overrideable Parameters

Name	Description	Default Value
Enabled	Enables or disables the workflow.	Yes
Priority	Defines Alert Priority.	1
Severity	Defines Alert Severity.	2

Element properties:

Target

Microsoft.SQLServer.2012.DBEngine

Category

EventCollection

Enabled

True

Event_ID

18459

Event Source

$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$

Alert Generate

True

Alert Severity

Error

Alert Priority

Normal

Remotable

True

Alert Message

{0}

Event Log

Application

Comment

Mom2012ID='{BCF6364E-A7F7-4E36-8A9A-598216D24E13}';MOM2012GroupID={467ECC75-C5DA-42BD-955C-A73BBB51AF74}

Member Modules:

ID	Module Type	TypeId	RunAs
_F6DA1507_12AF_11D3_AB21_00A0C98620CE_	DataSource	Microsoft.Windows.EventProvider	Microsoft.SQLServer.SQLDefaultAccount
GenerateAlert	WriteAction	System.Health.GenerateAlert	Default

Source Code:

<Rule ID="Microsoft.SQLServer.2012.Login_failed._The_workstation_licensing_limit_for_SQL_Server_access_has_already_been_reached_5_Rule" Target="SQL2012Core!Microsoft.SQLServer.2012.DBEngine" Enabled="true" ConfirmDelivery="true" Remotable="true" Comment="Mom2012ID='{BCF6364E-A7F7-4E36-8A9A-598216D24E13}';MOM2012GroupID={467ECC75-C5DA-42BD-955C-A73BBB51AF74}">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="_F6DA1507_12AF_11D3_AB21_00A0C98620CE_" Comment="{F6DA1507-12AF-11D3-AB21-00A0C98620CE}" TypeID="Windows!Microsoft.Windows.EventProvider" RunAs="SQL!Microsoft.SQLServer.SQLDefaultAccount">

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

      <LogName>Application</LogName>

      <Expression>

        <And>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>PublisherName</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>EventDisplayNumber</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>18459</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

        </And>

      </Expression>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">

      <Priority>1</Priority>

      <Severity>2</Severity>

      <AlertMessageId>$MPElement[Name="Microsoft.SQLServer.2012.Login_failed._The_workstation_licensing_limit_for_SQL_Server_access_has_already_been_reached_5_Rule.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

        <AlertParameter1>Event ID: $Data/EventDisplayNumber$. $Data/EventDescription$</AlertParameter1>

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

  </WriteActions>

</Rule>