Windows 2000 Server and Advanced Server virtual machines display an Operating System property of 'Unknown.' If the Operating System property is set manually, it will revert to 'Unknown' following an automatic SCVMM refresh. There are no errors associated with this change.
A database entry that identifies the list of supported virtual machine operating systems per hypervisor requires an update.
Update the VirtualManagerDB and restart SCVMM services following the directions below.
Using SQL Server Management Studio Express or a full SQL installation, make a full backup of the SCVMM database.
Connect to the SCVMM database (VirtualManagerDB by default). Open a new query and enter the commands below. Two affected rows will be returned in the 'Messages' window if present.
Close the SQL Management Studio, answering No or Cancel to any prompts.
Restart the VMMAgent and VMMService services.
Open the Admin Console and refresh your Hosts. Within 30 minutes any Windows 2000 VMs that have Integration Components (Virtual Guest Services) installed will show the correct Operating System property.
Integration Components (Virtual Guest Services) must be installed for the Operating System property to populate.
Microsoft® SQL Server® 2008 Management Studio Express can be downloaded from the following link:
Note: This issue applies only to System Center Virtual Machine Manager 2008 R2. It does not apply to earlier versions of the product.