Disabled network is the only possible network that the node can communicate with other nodes

Run the Validate a Configuration Wizard as described in "Using the Validate a Configuration Wizard to review the network configuration." Also, confirm that at least one network is configured for use by the cluster, as described in "Confirming that a network is configured as a cluster network."

If you do not currently have Event Viewer open, see "Opening Event Viewer and viewing events related to failover clustering."

To perform these procedures, you must be a member of the local Administrators group on each clustered server, and the account you use must be a domain account, or you must have been delegated the equivalent authority.

Using the Validate a Configuration Wizard to review the network configuration

To use the Validate a Configuration Wizard to review the network configuration:

1. To open the failover cluster snap-in, click Start, click Administrative Tools, and then click Failover Cluster Management. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
2. In the Failover Cluster Management snap-in, in the console tree, make sure Failover Cluster Management is selected. Then under Management, click Validate a Configuration.
3. Follow the instructions in the wizard to specify the cluster you want to test.
4. On the Testing Options page, select Run only tests I select.
5. On the Test Selection page, clear all check boxes except those for the Network tests.
6. Follow the instructions in the wizard to run the tests.
7. On the Summary page, click View Report.

Confirming that a network is configured as a cluster network

To confirm that a network is configured as a cluster network:

1. To open the failover cluster snap-in, click Start, click Administrative Tools, and then click Failover Cluster Management. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
2. In the Failover Cluster Management snap-in, if the cluster you want to configure is not displayed, in the console tree, right-click Failover Cluster Management, click Manage a Cluster, and select or specify the cluster you want.
3. If the console tree is collapsed, expand the tree under the cluster that you want to configure.
4. Expand Networks.
5. Right-click the network that you want to modify settings for, and then click Properties.
6. If you want to use this network for the cluster, make sure that Allow the cluster to use this network is selected. If you select this option and you want the network to be used by the nodes only (not clients), clear Allow clients to connect through this network. Otherwise, make sure it is selected.

Opening Event Viewer and viewing events related to failover clustering

To open Event Viewer and view events related to failover clustering:

1. If Server Manager is not already open, click Start, click Administrative Tools, and then click Server Manager. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
2. In the console tree, expand Diagnostics, expand Event Viewer, expand Windows Logs, and then click System.
3. To filter the events so that only events with a Source of FailoverClustering are shown, in the Actions pane, click Filter Current Log. On the Filter tab, in the Event sources box, select FailoverClustering. Select other options as appropriate, and then click OK.
4. To sort the displayed events by date and time, in the center pane, click the Date and Time column heading.

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