hyper v virtual machine lost network connectivity

Build a VM on Hyper V a couple month ago, windows server 2008 r2 standard.  It has license applied and was fine with static IP since.  Yesterday, the interface stopped working.  The hyper v server is fine and there is an interface selected for the VM and network settings are still on that interface when you go into the VM from the hyper v administrator.   What else could it be?  I read there is a check box to share the mgmt interface for the hyper v server.  I can't find that and the other 2 vms on the hyper v server are communicating fine.  Thank you for your help!
emjay180VMware EngineerAsked:
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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
Shut down the VM, remove the NIC and add it again to see if that resolves the issue.
emjay180VMware EngineerAuthor Commented:
Thanks Mohammed, it seemed to be even easier.  I changed IP and it came up.  Apparently something else was using the address (very small business).  must be in dhcp pool and not reserved.  thanks!

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emjay180VMware EngineerAuthor Commented:
Fixed myself.
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