About VM Reports

This page covers the following topics:


VM Reports Module is used to perform a complete scan for all installed VMs in your network. You can perform an automated inventory of VMs and their configuration at regular intervals and keep a constant watch on the health of your Hyper-V Servers.

Please be aware that the VM Reports Module uses WMI (Windows Management Instrumentation) to collect report data. Hence, all reports require WMI to be installed and enabled on the Hyper-V host server and its VMs. For more information refer to "Prerequisites and Initial Configuration" section.

Prerequisites and Initial Configuration

The VM Reports Module uses WMI to collect report data. WMI uses DCOM protocol and is affected by Windows Firewall and DCOM security settings. In order to generate the reports both Windows Firewall and DCOM must be properly configured. Windows Firewall and DCOM, when not properly configured on your remote computers, can cause errors such as an "RPC Server Unavailable" error or an "Access is denied" error. Also, ensure that the current user context or specified user context, under which the application runs, is a local administrator on target computers.

In order to generate the reports ensure the following settings are set appropriately:

  • Remote Administration setting is enabled on Windows Firewall. By default, Windows Firewall blocks all unsolicited incoming traffic except for Group Policy. This is a common issue you might encounter while generating the reports. To resolve this issue, you need to enable the remote administration setting on the Firewall. For more information about configuring the Windows Firewall connections with a script, see http://www.microsoft.com/technet/community/columns/scripts/sg1104.mspx#EJAA.

  • WMI is installed and the Startup Type for WMI service is set to Automatic and the service is running under Local System Account.

  • DCOM is enabled and ensure that security settings for DCOM allow remote connections

    1. Run the DCOM Configuration Utility (dcomcnfg.exe)

    2. In the Component Services dialog box, expand Component Services, expand Computers, and then right-click My Computer and click Properties

    3. In the My Computer Properties dialog box, click the Default Properties tab

    4. Select Enable Distributed COM on this computer

    5. The Default Authentication Level is set to Connect and the Default Impersonation Level is set to Identify in Windows XP and later operating systems. For Windows NT, however, the Default Authentication Level is set to Connect and Default Impersonation Level is set to Impersonate

    6. The default DCOM security settings for Access Permissions and Launch and Activation Permissions in the COM Security tab in the My Computer Properties dialog includes at least INTERACTIVE, SYSTEM and Administrators

  • In Windows XP SP2 and later operating systems the SERVICE account is granted Impersonate a client after authentication right under User Rights Assignment under Local Policies

  • The Data Execution Prevention in Windows XP SP2 and Windows 2003 SP1 is enabled for essential windows programs only

System Info Reports

The VM Reports Module provides reports on the following resource categories: