Windows server 2008 failover clustering Event ID 1135 (Resolved)


Windows Cluster failed with System Event Log Critical Error Failover Clustering event ID 1135


For the past 2 – 3 months the cluster has not been working stably. Randomly cluster failed and generating failover clustering Event ID 1135.

“Log Name: System

Source: Microsoft-Windows-Failover Clustering

Date: 9/3/2013 8:01:45 PM

Event ID: 1135

Task Category: None

Level: Critical





Cluster node ‘EXTRANET1′ was removed from the active fail over cluster membership. The Cluster service on this node may have stopped. This could also be due to the node having lost communication with other active nodes in the failover cluster. Run the Validate a Configuration wizard to check your network configuration. If the condition persists, check for hardware or software errors related to the network adapters on this node. Also check for failures in any other network components to which the node is connected such as hubs, switches, or bridges.”


Windows Cluster running on Server 2008 Enterprise Sp2 x64 installed.


There is High impact because Windows Clustering is Unstable.


Resume Windows Failover Clustering original stable state.

If the problem is found to be due to third-party code we will provide information to substantiate this.

Troubleshooting & Resolution:

Network drivers have been updated latest one (confirm with the hardware vendor of NIC make and module).

Checked and upgrade storage driver including power path. All Windows patches have been updated successfully.

Windows server cluster configuration has been checked and nothing found wrong, but still the issue persists.

Advance settings for NIC parameters

1. Recheck if the Broadcom drivers are updated. 2. Disabled TCP Chimney and all the offloading feature from both OS and NIC level.
Please backup registry key and parameter before making any registry changes.
a. Disable RSS in the Registry by adding a DWORD registry key value for
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableRSS and setting it to 0.
b. DisableTaskOffload in the Registry by adding a DWORD value for
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DisableTaskOffload and set it to 1.
c. Disable TCPChimney in the Registry by adding a DWORD value for
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableTCPChimney and set it to 0.
d. Disable EnableTCPA in the Registry by adding a DWORD value for
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableTCPA and set it to 0.

2.Made the following changes on your physical NIC

Network Tcp Offload settingsGo to the NIC properties, click on the advanced button, disable features that has the “Offload” or “RSS” wording in feature name.

For examples, below is some of the features commonly seen in NIC’s advanced properties:
– IPv4 Checksum Offload
– IPv6 Checksum Offload
– IPv4 Large Send Offload
– IPv6 Large Send Offload
– Receive Side Scaling
– TCP Connection Offload (IPv4)
– TCP Connection Offload (IPv6)

3. Increased the timeout: Copy and paste below commands in elevated command prompt.

Cluster /props SameSubnetDelay = 2000
Cluster /props SameSubnetThreshold = 10
Cluster /props CrossSubnetDelay = 2000
Cluster /props CrossSubnetThreshold = 10

After implementing these steps the Windows server cluster will be Stable and working correctly.

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Vasant Sakpal

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