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Thanks Svet, I will have to do this after hours. Will let you know how it turns out.
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Thanks Svet, I will have to do this after hours. Will let you know how it turns out.

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Svete that was not the resolution. But since you are the only one that replied you get the points. <br />
<br />
The resolution was found by Tech Support and had something to do with running out of space in the volume snapshots directory.
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Svete that was not the resolution. But since you are the only one that replied you get the points.

The resolution was found by Tech Support and had something to do with running out of space in the volume snapshots directory.

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I have a single stand alone Hyper-V Box (Server 2008 R2 Enterprise) at a remote office that has two VMs. Both are Server 2008 R2 VMs. <br />
<br />
Each night my backup software does a VSS Snapshot of the Hyper-V Host. During this process only one of the VMs virtual NIC goes offline. <br />
<br />
Get an Event ID 10: The miniport 'Microsoft Virtual Machine Bus Network Adapter #2' disconnected.<br />
<br />
Followed 10 minutes later by a Even ID 9:<br />
The miniport 'Microsoft Virtual Machine Bus Network Adapter #2' connected.<br />
<br />
This issue is isolated to this one VM on this one Hyper-V host.
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I have a single stand alone Hyper-V Box (Server 2008 R2 Enterprise) at a remote office that has two VMs. Both are Server 2008 R2 VMs. 

Each night my backup software does a VSS Snapshot of the Hyper-V Host. During this process only one of the VMs virtual NIC goes offline. 

Get an Event ID 10: The miniport 'Microsoft Virtual Machine Bus Network Adapter #2' disconnected.

Followed 10 minutes later by a Even ID 9:
The miniport 'Microsoft Virtual Machine Bus Network Adapter #2' connected.

This issue is isolated to this one VM on this one Hyper-V host.

Hyper-V Guest VM NIC goes offline during VSS Snapshot

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.

Virtualization

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.