Hi,
We encountered this problem (on 25 April 2013) and need to find out the root cause. We do have the cluster.log file but we are not that good to interpret it. Please assist.
Operating system: Windows Server 2008 R2 Enterprise Edition (64-bit)
Error message:
The Cluster service is shutting down because quorum was lost. This could be due to the loss of network connectivity between some or all nodes in the cluster, or a failover of the witness disk.
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 adapter. Also check for failures in any other network components to which the node is connected
such as hubs, switches, or bridges.