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The Recycle Bin is corrupted on Cluster Node. We are using Windows 2012 STD OEM


Win2k3 and Win2k8R2 VMs are showing Network "Configuration Error" and lose network

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Hi ,

V host running Windows Server 2008 R2 and the VM running Windows 2K3 or Windows 2008 R2 are losing the network very often. The network adapter value get set "Configuration Error" and machine lose all connectivity .

If I re-add the network connection to the VM then it work fine .

Also if I install client OS like Win7 , XP then the VM network work fine and never show the "Configuration Error" in network adapter.

Any ideas what may be causing this issue? Is Win2k3.Win2k8R2 need any specific hotfix to resolve the issue ?

Thanks,

Suresh


Suresh Dinde

Hyper-V and FTP in HTML

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I have FTP installed on my Hyper-V server. In my Web page I have the following:

<a href ftp://207.28.29.231>FTP to your Files</a>

Where 207.28.29.231 is the public IP address of my router. I have port forwarding turned on to point to my Server2008r2. However, my web server is actually in Hyper-V. Does that mean I have to port forward to my HyperV server instead of Server2008r2?


Tina Jansen

NetBT 4319 Error

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I have recently taken over for a system administrator and we are having tons of issues with or domain and Hyper-V servers. Oh the joys of taking over someone elses mess. In the event viewer for Virtual1 (Hyper-V Windows 2008 r2, we are receiving an NetBT Error message. I have posted below the nvtstat -n. I have read through many posts that this is how to diagnosis the problem but don't understand what to do from here. Any suggestions for the forum would be much appreciated.

** Edited to add that we are not running WINS

Thanks

C:\Windows\system32>nbtstat -n

Local Area Connection:
Node IpAddress: [192.168.168.30] Scope Id: []

                NetBIOS Local Name Table

       Name               Type         Status
    ---------------------------------------------
    VIRTUAL1       <00>  UNIQUE      Registered
    IDC            <00>  GROUP       Registered
    VIRTUAL1       <20>  UNIQUE      Registered

Local Area Connection 6:
Node IpAddress: [192.168.168.179] Scope Id: []

                NetBIOS Local Name Table

       Name               Type         Status
    ---------------------------------------------
    VIRTUAL1       <00>  UNIQUE      Registered
    IDC            <00>  GROUP       Registered
    VIRTUAL1       <20>  UNIQUE      Registered

Local Area Connection 7:
Node IpAddress: [192.168.168.121] Scope Id: []

                NetBIOS Local Name Table

       Name               Type         Status
    ---------------------------------------------
    VIRTUAL1       <00>  UNIQUE      Registered
    IDC            <00>  GROUP       Registered
    VIRTUAL1       <20>  UNIQUE      Registered

Local Area Connection 8:
Node IpAddress: [192.168.168.193] Scope Id: []

                NetBIOS Local Name Table

       Name               Type         Status
    ---------------------------------------------
    VIRTUAL1       <00>  UNIQUE      Registered
    IDC            <00>  GROUP       Registered
    VIRTUAL1       <20>  UNIQUE      Registered

C:\Windows\system32>


Hyper V on Server 2012 R2 Essentials (Local Domain) to Windows 7 on WORKGROUP

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So, i had Server 2008 R2 running this no problem using the HVRemote tool, so i did a similar process again and i can connect to the Hyper V Manger but i cant see my VMs, i did the /show command and got this odd error:

3: - Connect to root\cimv2 WMI namespace
     PASS - Connection established

4: - Connect to root\virtualization WMI namespace
     PASS - Connection established

5: - Simple query to root\cimv2 WMI namespace
     PASS - Simple query succeeded

6: - Simple query to root\virtualization WMI namespace
     PASS - Simple query succeeded

7: - Async notification query to root\virtualization WMI namespace
***** Failed to create SwbemSink object -2147217392 Invalid class

Any one got any ideas?

Windows Server 2012 Hyper-V network latencies

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Hi All,

I have an issue with our Windows Server 2012 Hyper-V hosts that I can't seem to figure out. Situation:

2 x Dell PowerEdge R815 servers with AMD opteron 6376 16 core CPU's and 128 GB RAM running Windows Server 2012 with Hyper-V.

2 virtual machines running on the same physical host and connected to the same virtual switch show high TCP connection latencies. One virtual machines runs a SQL Server 2012 database instance and a Dynamics AX 2012 R2 instance. The other machine a SharePoint 2013 instance and the AX client. We see latencies of 20ms and higher on most of the TCP connections that are made from the sharepoint machine to the sql server machine.

At first I thought it might have something to do with the physical NIC's. It turned out that VMQ wasn't correctly supported by the firmware of the Broadcom BCM5709c cards. By default this setting is enabled. Turning off the VMQ setting somewhat improved the situation but the latencies are still at 8ms and higher.

What I don't understand is what influence enabling/disabling VMQ should have on network performance. As I understand it now virtual machines connected to the same virtual switch bypass the physical altogether. Another point is that VMQ should actually improve performance, not decrease it.

Another question I have is about the various tcp offloading settings on the physical NIC's. After installing the new firmware and drivers from Dell most of these settings are set to disabled. The documents I have been able to find talk about Windows Server 2008, any thought how these settings relate to Windows Server 2012 and whether they should be enabled?

Thanks in advance for your time and thoughts

Kind regards,

Dennes Schuitema

Hyper-V on Windows 8.1 is messing with MAC address when sharing my Wifi card

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Hello,

I'm using Hyper-V on Windows 8.1 to build a complete SharePoint Development environment.

All of my VM are following this scheme:

  • a "local" private network shared between the host and all VM, using a static IP address plan (192.168.10.0/24)
  • a RJ45 external network, attached to my physical ethernet card. This network uses DHCP protocol
  • a WIFI external network, attached to my wireless network card. This network also use DHCP protocol

When plugged on the ethernet card, I have no issue. Both the host and the guest OSes are getting a valid IP address.

However, when I try to connect on the wireless card, I get some weird errors. Actually, my guest OS are getting the same IP address than the host. This issue an IP address conflict.

Someone else got the same kind of behavior : Windows 8.1 Hyper-V : IP address conflict on Guest OS

I've checked my MAC address plan, and it seems correct.

Using WireShark (a tool I'm not used to I admit), I can see that all DHCP request of the guest os, are sending the host MAC address, and not the guest' one.

Does anyone have an answer to this weird behavior?

Thanks,

steve


Paying back the community for its help by writing articles :
Have a Nice Day.Net Blog

Pet peeve: Numlock of Host

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OK, I am sorry if this may seem "childish", but I have to let know my little frustration about the Hyper-V manager and the VM windows that keep changing the state of my Numlock!!!!!!

I want it ON, but everytime I open a VM, it keeps switching it to OFF, and for the love of me, I can't find a way to make it stop that...

There, I feel better, and who knows, maybe this little thing may get corrected in the final version ;)

Serge

How to manage a Hyper-V 2012R2 Host from Windows 7?

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AFAIK This is the official Hyper-V Manager for Windows 7: http://www.microsoft.com/en-us/download/details.aspx?id=7887 it explicitly lists Hyper-V versions up to 2008R2, there is no mention of 2012 or 2012R2, and from trying to connect to my new Hyper-V 2012R2 I can confirm that it doesn't want to work.

From reading the docs on Hyper-V 2012/2012R2 remote management I've come to the conclusion that its only possible with Windows 8+ or Server 2012+ , but it cannot be used to manage Hyper-V 2008/2008R2...

Someone please tell me that this is just one big mistake on my part and that the product owner for Hyper-V at Microsoft is not this stupid...

Hyper-V user CAL licensing

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Hello

For Hyper-V host there's no need to have user or device CAL for accessing guest VMs. So if I have VMs only with for example Ubuntu systems, I don't need any CAL in my environment. Is that right? I think, yes.

So the next question is, what about the case, when users want to connect to Hyper-V Server for having access to tools like console, restarting or snapshoting their VMs. Do I need CALs for them?


--- Jacek Kochan MCSE,MCSA,MCITP

Server 2012R2 Hyper-V allocated a large amount of RAM to the host server.

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We have a test environment and have encountered an issue with the ProLiant DL380 G5 servers with 10GB RAM, running Server 2012R2 Datacentre. We do not use dynamic memory (only startup/fixed memory) and NUMA spanning is on.
This is the current Hyper-V VM setup with the corresponding allocated RAM amounts:

  1. Windows 7 -                       512MB
  2. 2008R2 server DC -           1024MB
  3. 2008R2 SharePoint 2010 -  2048MB
  4. 2008R2 TMG 2010 -           2048MB

When all of these VMs are powered on, the resource monitor on the host shows the following memory info:

  • Hardware reserved -                3MB
  • In Use -                             6635MB
  • Modified -                              13MB
  • Standby -                           1357MB
  • Free -                                 2234MB

The problem is that our Exchange 2010 server with 20148MB of allocated RAM cannot be powered on; error:

Questions:

  • What does the standby memory do?
  • Why am I unable to start another VM, even though there seems to be enough free memory on the physical host

Many thanks!


Marco S

Sleep and hibernation is working on Server 2012 with started hypervisor! I do not know why...

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Hi,
I enabled Hyper-V role in the Microsoft Windows Server 2012 on testing computer (PC with i7 CPU and 16GB RAM). I found very strange behavior. The sleep mode was enabled and after command “powercfg /hibernation on” the hibernation is also working.

I tested sleep (S3) and hibernation with started hypervisor and with running virtual machine. I tested sleep and hibernation triggered by power button and even with time-out that was set in the Power Options (I set sleep after 1 minute and later hibernate after 1 minute and wait).

Sleep and hibernation is working! I do not understand why. Sleep and hibernation should be functional only on Client Hyper-V on Windows 8 and not on the Server 2012.

Some examples:
--------------------------------
Testing workstation (i7, 16GB RAM) with Server 2012 and with started hypervisor:
--------------------------------
C:\Users\Administrator>powercfg /a
The following sleep states are available on this system:
    Standby (S3)
    Hibernate
    Fast Startup

The following sleep states are not available on this system:
    Standby (S1)
        The system firmware does not support this standby state.

    Standby (S2)
        The system firmware does not support this standby state.

    Standby (Connected)
        The hypervisor does not support this standby state.
        The system firmware does not support this standby state.

    Hybrid Sleep
        The hypervisor does not support this standby state.

--------------------------------
My laptop (i5, 8GB RAM) with Server 2012 and with started hypervisor:
--------------------------------
>powercfg /a
The following sleep states are not available on this system:
    Standby (S1)
        The system firmware does not support this standby state.
        An internal system component has disabled this standby state.
                Hypervisor

    Standby (S2)
        The system firmware does not support this standby state.
        An internal system component has disabled this standby state.
                Hypervisor

    Standby (S3)
        An internal system component has disabled this standby state.
                Hypervisor

    Hibernate
        An internal system component has disabled hibernation.
                Hypervisor

    Standby (Connected)
        The hypervisor does not support this standby state.
        The system firmware does not support this standby state.

    Hybrid Sleep
        Standby (S3) is not available.
        Hibernation is not available.
        The hypervisor does not support this standby state.

    Fast Startup
        Hibernation is not available.
--------------------------------

R. Revil


Relef Revil


Client Hyper-V Maximum Connections

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I have not been able to find a conclusive answer to this.

Does Windows 8 Pro have a concurrent connection limit like previous versions of Windows desktop OS(s)?  If so what about a virtual machine running on it in Client Hyper-V?

Specific scenario:
Win 8 Pro workstation, running Server 2008R2 VM (DC, File and Print Server) in a disaster recovery scenario. The Server is on an External network connection in Hyper-V, so presumably traffic goes direct to the workstations LAN card. Will there be a limit to the number of clients that can connect to the Server VM?

Thank You,

Shane Linde

Newb Question - Can I rename a Hyper-V Host without breaking the virtual machines that are on it?

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I am new to Hyper-V, frogive me.  We have a Windows Server 2008 R2 with a name that does not match our standard naming convention.  This server hosts a couple vitual machines running inside of it.  I am ok with rebooting all of them but I don't want to break them for good because of the new name on the host.

Configuring network connectivity for VM's on Hyper-V 2012 R2 Server

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Hi,

We have installed Hyper-V server 2012 R2 on a server and trying to configure 10 VM's.

on the host machine we have 4 ethernet adpaters available ,for now we have enabled only one.

Questions :

1)Can we use only one adapter and configure all the VM's ?

    -- if we use only one adapter for connecting all the VM's will there be any performance or connectivity issues ?

2) Do we need to configure virtual switches ?

Note :Users will access VM's using VPN connectivity .

What is the recommended one .Please suggest

Thanks



Hyper-V Replica in the same site

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I know it may sound strange and I don't care to illustrate the reasoning behind this but I just want to know if this is technically possible?  I haven't read any restrictions regarding replicating Hyper-V data within the same site but I wanted to confirm with the community.

RAID 6 for Hyper-V server 2012 R2 OS

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Hi,

Configured RAID 6 for the disks available (12 disks) and installed Hyper-V server 2012 R2 on that disk.

the problem is the partition is showling  free space available as 0 and not able to configure VMs.

What could be the reason for this to happen ? did any face this type of issue.

Please suggest ?

Thanks

Hyper-v Core - Hyper-V Manager connection

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Hi All,

I'm trying to connect to my core from my win7 machine Hyper-v manager, I'm using a simple workgroup-subnet in my office.

I'm always getting "You do not have required permissions..."

I tried adding via the core command line to add my workgroup local user but still same issue.

How do I resolve this kind of issue.

Thanks



Hyper-V Core 2012 Setup fails

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Hi there,

I downloaded the free available Hyper-V Core 2012 from Technet. During the Setup I get this error message:

"Windows could not parse or process the unattend answer file for pass [specialize]..."

Anyone knows whats going wrong?

Regards

Cannot apply Hyper v Replica ip failover.

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Hello,

I'm using Hyper with replica server. I have two hosts in Windows Server 2012 with hyper v installed and last integration installed both sides on each VM.

I have set up the failover ip on each side, and when I try to failoer a machine evryhting work good execpt the ip failover... I have this error : 

« xxxx» n’a pas pu appliquer les paramètres IP à l’adaptateur « {6f71b925-f7d3-4f7a-b987-ca787eca5643} » : Erreur non spécifiée (0x80004005). (ID d’ordinateur virtuel 3B423647-943C-444C-9E2A-E8C24973B643)

English : « xxxx»cannot apply ip settings to the adaptor« {6f71b925-f7d3-4f7a-b987-ca787eca5643} » : non specified error (0x80004005). (ID d’ordinateur virtuel 3B423647-943C-444C-9E2A-E8C24973B643)...

+System
-Provider
[ Name]Microsoft-Windows-Hyper-V-Integration-KvpExchange
[ Guid]{82D60869-5ADA-4D49-B76A-309B09666584}
EventID4132
Version0
Level2
Task0
Opcode0
Keywords0x8000000000000000
-TimeCreated
[ SystemTime]2013-12-14T15:02:24.884325200Z
EventRecordID359
Correlation
-Execution
[ ProcessID]4192
[ ThreadID]1368
ChannelMicrosoft-Windows-Hyper-V-Integration-Admin
Computerxxxx
-Security
[ UserID]S-1-5-83-1-994195015-1145869372-3269995166-1136030537
-UserData
-VmlEventLog
VmNamexxxServer
VmId3B423647-943C-444C-9E2A-E8C24973B643
String{6f71b925-f7d3-4f7a-b987-ca787eca5643}
ErrorCodeString%%2147500037
ErrorCode

0x80004005

Is someone can help me, I'm stucked for one week now and cannot find any solutions... Thank you very much...


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