NLB failed to update the NLB host state in the registry Rule

  • ID:  Microsoft.Windows.NetworkLoadBalancing.6.2.NLB.failed.to.update.the.NLB.host.state.in.the.registry
  • Description:   
  • Target:  Windows Server 2012 NLB Server Role
  • Enabled:  On Essential Monitoring

Overridable Parameters

Parameter Name Default Value Description Override
Event Collection Enabled false  

Run As Profiles

Name
Default

Rule Knowledgebase

Summary

When configured to do so, the Network Load Balancing (NLB) host state will persist whenever the NLB cluster shuts down and restarts.

Causes
This rule does not contain any causes.
Resolutions

Confirm that the initial host state is correct

To check the initial Network Load Balancing (NLB) host state, you must first delete the registry key defined in the event log, and then confirm that the initial host state is correct.

Incorrectly editing the registry may severely damage your system. Before making changes to the registry, you should back up any valued data on your computer.

Delete the registry key defined in the event log entry

To delete the registry key defined in the event log entry:

  • Open Registry Editor.

  • To set the state of the NLB host at the next restart, delete the following registry key, if it exists: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\WLBS\Parameters\Interface\{GUID}\HostState. Deleting this key ensures that on the next restart, NLB will use the preferred initial host state.

The GUID is the globally unique identifier of the network adapter that is experiencing the problem. This will be the network adapter that is bound to NLB. If NLB is, or has been, bound to multiple network adapters, you can find the correct adapter by looking at the value for the ClusterIPAddress key for each GUID entry in the registry.

Confirm that the NLB initial host state is correctly configured

To confirm the NLB initial host state is correctly configured:

  • Click Start, click Administrative Tools, and then click Network Load Balancing Manager. You can also open NLB Manager by typing Nlbmgr at a command prompt.

  • If NLB Manager does not already list the cluster, connect to the cluster.

  • Right-click the host that you want to configure, and then click Host Properties.

  • Click the Host Parameters tab, and then verify that the value in Initial host state is correct.

External References
This rule does not contain any external references.

See Also for Windows Server Network Load Balancing Management Pack


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