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Make sure the vswitch you're using has a gateway configured... can you ping the gateway from the vm?
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Make sure the vswitch you're using has a gateway configured... can you ping the gateway from the vm?

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I've installed over 3 servers with some variation of the following as the symptom/remedy:<br />
<br />
<br />
1. Install a fresh install of Windows 2008R2.<br />
2. Install Hyper-V.<br />
3. Install Virtual Machine - 2008R2<br />
4. Install DNS, DHCP, File Services, and WSUS roles <br />
<br />
Run Windows update on host machine as well as Virtual Machine.<br />
<br />
No internet results on host machine.<br />
<br />
Remedies:<br />
1. Give the NIC assigned to the VM a static address.<br />
2. Disable ipV6 wherever possible.<br />
<br />
Now, unfortunately, in my latest install, I did both of the above, and nothing... <br />
<br />
Funny part, I can ping the VM, but the VM cannot ping out. &nbsp;If I enable v6, it can ping other v6 machines on the network.<br />
&nbsp;<br />
Ideas?
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I've installed over 3 servers with some variation of the following as the symptom/remedy:


1. Install a fresh install of Windows 2008R2.
2. Install Hyper-V.
3. Install Virtual Machine - 2008R2
4. Install DNS, DHCP, File Services, and WSUS roles 

Run Windows update on host machine as well as Virtual Machine.

No internet results on host machine.

Remedies:
1. Give the NIC assigned to the VM a static address.
2. Disable ipV6 wherever possible.

Now, unfortunately, in my latest install, I did both of the above, and nothing... 

Funny part, I can ping the VM, but the VM cannot ping out.  If I enable v6, it can ping other v6 machines on the network.
 
Ideas?

Hyper-V Guest OS loses connectivity.

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.

Microsoft Legacy OS

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.

Internet Protocols

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.