VM is unable to access file share on Hyper-V 2012 Host

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http://serverfault.com – This problem just started recently. I have a number of VMs (2008 R2) on a 2012 Hyper-V host but not all are effected in the same manner. The VMs are identical and no changes were made to either the VM or Hyper-V host. I am unable to reach the Cluster Shared Volume on a few VMs. I am able to ping the Hyper-V host by name and IP. But I cannot connect to the share via name, IP, or FQDN. I can reach other network shares okay, but not shares on the Hyper-V host. Things that I have checked/tried - DNS does not seem to be an issue. I can ping by name and nslookup resolves correctly - 6to4 Adapter h (HowTos)