Virtual Server 2005 R2 SP1 now available

Virtual Server 2005 R2 SP1 now available

  • Comments 15

The final release of Virtual Server 2005 R2 SP1 is now available for download at the newly updated:

Stealing from one of the product web sites, the key changes in this service pack are:

Change Description

Hardware-assisted virtualization

Supports both Intel Virtualization Technology (Intel VT) and AMD Virtualization (AMD-V) hardware-assisted virtualization.

VHD Mount Command-line Tool and APIs

Provides the ability to mount a virtual hard disk file (.vhd file) as a virtual disk device on another operating system.

Support for Volume Shadow Copy Service

Allows back-up of Virtual Server and its running virtual machines without needing to install backup agents inside the guest operating system of the virtual machines.

Larger default size for dynamically expanding virtual hard disks

The default size for dynamically expanding virtual hard disks has been changed from 16 GB to 127 GB, making the VHD file format even more useful for enterprise production, test, and disaster-recovery workloads.

Support for greater than 64 virtual machines on x64-based hosts

Virtual Server can run more than 64 virtual machines on x64-based hosts. The 64 virtual machine limit remains when running on 32-bit hosts.

Host clustering step-by-step guide

Host clustering allows you to extend the high-availability benefits of clustering to non-cluster-aware applications and workloads.

Virtual SCSI fix for Linux guests

This fix resolves an issue some customers encountered when trying to install certain Linux distributions inside a virtual machine on the emulated SCSI bus.

VMRC ActiveX control and Internet Explorer Security Zones

The Virtual Machine Remote Control (VMRC) ActiveX control now uses the security zone information in Internet Explorer to determine whether to prompt you for your credentials when you load the control.

Service Publication using Active Directory Service Connection Points

Virtual Server service now publishes its binding information in Active Directory as a Service Connection Point (SCP) object.


Plus the usual assortment of bug fixes.  Have fun!


Leave a Comment
  • Please add 3 and 2 and type the answer here:
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  • Ben,

    Will installing VS 2005 R2 SP1 provide shared code that will benefit PVC 2007 VMs?

  • Now that we have shadow copy copy capability, how can we change our backup procedures?

    Currently, I'm using a script by John Savill that pauses the VM, copies the .v** files, and starts the VM.  Typically takes 5-9 minutes per .VHD file.

  • I have problems while inmplementing a Host Clustering using SP1!

    When I do a failover of Guest to other node, the "Virtual Server" services get halted, until I kill the procces of this service and start the service again.

    there also a problem with duplicat MAC. event 1130

  • Be sure to shut down and merge all existing vms as it appears there are serious problems after you upgrade.

    Question:  the only available download from MS is "enterprise."  If this download is run against existing Standard installations, will it just service pack it, or will it upgrade it to "enterprise"?

  • It's asking for Virtual Server 2005 Setup.msi from the beta release I previously had installed but no longer have access to. I can't get it anywhere, so I can neither uninstall nor upgrade the expired beta. I am stuck. Please help!

  • Completely tanked my server.

    Upgraded to SP1 and the virtual server service couldn't start (said "unknown error" in the log).  Tried uninstall & reinstall.  No luck.

    Tried going back to R2 golden - service started; vms started; none of the VMs could see the net.  In fact, no network adapters are enumerated in client VMs (as seen in dev mgr), though they are listed in the .VMC.  Remove/re-add VM; no change.  Remove/re-add net adapters on admin console.  No change.

    If anyone's got any ideas; let me know, because I really don't want to wipe & reload the host OS.

  • I'm looking to find out if VS R2 sp1 64bit on 64bit OS (host) will support 64bit & 32bit OS Guests?


  • Does this SP1 include any Vista/LHS related changes/improvements?

  • Wesley -

    No.  The shared components are almost identical.

    Tim Jackson -

    That is on my queue of blog posts to do.

    Alex Simenduev -

    Not sure what is happening there.  I would recommend that you contact Microsoft product support.

    Jesse -

    We will upgrade to 'Enterprise' - that is the only version that exists now.

    Danny -

    What happens if you just try to uninstall you current copy of Virtual Server first?

    Rob -

    Not sure what is happening there.  I would recommend that you contact Microsoft product support.

    amantia -

    No, it only supports 32-bit virtual machines.

    CRathjen -

    Yes, many.



  • I installed VS 2005 R2 SP1 under Vista Ultimate. I ran the cmd script for setting all IIS6.0 compatibility and security. Also set my User ID as both local and Domain admin member. I can get the VS Admin site to come up, but can't create a VM or can't access and Server Properties like Search Path or Virtual Server Scripts. All i get is "Virtual Server's configuration information could not be retrieved. The configuration value could not be retrieved. User does not have suffcient access rights." I have given my user ID Full Control to C:\Program Files\MS Virtual Server....any ideas??

  • Is this an upgrade or a completely new install?

  • Ok so I found that answer:

    The update from 2005 R2 to 2005 R2 S1 is an actual update, the update from 2005 to 2005 R2 SP1

  • Ok so I found that answer:

    The update from 2005 R2 to 2005 R2 S1 is an actual update, the update from 2005 to 2005 R2 SP1 needs a new install

  • Hi Ben,

    Any Idea when VS2005R2SP1 will support x64 clients? I would liked to have tried my B1 of Cougar on it.

    Many thanks


  • Ben

    I am equally interested in the backup process for Virtual Server 2005 R2 SP1. Will we be able to backup the VMs without shutting them down? I need a way to back them up and transport offsite to afford us protection from a fire or theft. I will watch for your blog post.

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