creating instance issue

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Hi I have installed Nova compute in windows server 2012 R2, when i am going to create instance i am going to get following error, please help

Message No valid host was found. Code 500 Details File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 614, in buildinstances requestspec, filterproperties) File "/usr/lib/python2.7/site-packages/nova/scheduler/client/init.py", line 49, in selectdestinations context, requestspec, filterproperties) File "/usr/lib/python2.7/site-packages/nova/scheduler/client/init.py", line 35, in _runmethod return getattr(self.instance, _name)(*args, **kwargs) File "/usr/lib/python2.7/site-packages/nova/scheduler/client/query.py", line 34, in selectdestinations context, requestspec, filterproperties) File "/usr/lib/python2.7/site-packages/nova/scheduler/rpcapi.py", line 108, in selectdestinations requestspec=requestspec, filterproperties=filterproperties) File "/usr/lib/python2.7/site-packages/oslo/messaging/rpc/client.py", line 152, in call retry=self.retry) File "/usr/lib/python2.7/site-packages/oslo/messaging/transport.py", line 90, in _send timeout=timeout, retry=retry) File "/usr/lib/python2.7/site-packages/oslo/messaging/drivers/amqpdriver.py", line 408, in send retry=retry) File "/usr/lib/python2.7/site-packages/oslo/messaging/_drivers/amqpdriver.py", line 399, in _send raise result