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What turned out to be the culprit?
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Our Hyper-V server running windows server 2012 R2 &nbsp;host our applications and recently we noticed the server keeps on freezing and when you attempt to reset the hyper v server it just halts . You can see on the status that it is resetting but it stays there forever. Restarting the host too takes a very long time before it is fully up. Can I please know what is the main cause of this?
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Our Hyper-V server running windows server 2012 R2  host our applications and recently we noticed the server keeps on freezing and when you attempt to reset the hyper v server it just halts . You can see on the status that it is resetting but it stays there forever. Restarting the host too takes a very long time before it is fully up. Can I please know what is the main cause of this?

Application server running on Hyper-V  windows server 2012 R2 freezes upon restarting.

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.

Hyper-V

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.