file share witness problem in windows 2008 cluster

[blin]

I'm writing because I've a problem with a windows cluster server 2008, the evironment is the following:

- Vmware ESXi 4.0 with Domain Controller, two windows server 2008 in cluster
- 1 virtual NAS (the quorum is here) such as windows server 2008.

I followed the esxi guide to install the cluster according any requirements. I got the following errors frequently:

EventID 1135:Cluster node 'XXX' was removed from the active failover 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.

EventID 1049:File share witness resource 'File Share Witness (\\NAS\quorum)' failed to arbitrate for the file share '\\NAS\quorum'. Please ensure that file share '\\NAS\quorum' exists and is accessible by the cluster.

EventID 1069:Cluster resource 'File Share Witness (\\NAS\quorum)' in clustered service or application 'Cluster Group' failed.

EventID 1564:File share witness resource 'File Share Witness (\\NAS\quorum)' failed to arbitrate for the file share '\\NAS\quorum'. Please ensure that file share '\\NAS\quorum' exists and is accessible by the cluster.

it's seems to be an errors sequence.

I'v already modified hearbeat and quorum time max parameters but I got the same error always.

Does anyone know any solution?

[blin]

It was E1000 NIC driver, I had to re-install the driver provided by Intel