Here’s a new Knowledge Base article we published. This one covers how to troubleshoot issues when adding a Hyper-V host in System Center 2012 Virtual Machine Manager.
This article covers how to troubleshoot issues when adding a Hyper-V host in System Center 2012 Virtual Machine Manager. Common errors that are logged in the VMM Console when an “Add virtual machine host” job fails:
Error (421) Agent installation failed on servername.domain.com because of a WS-Management configuration error.
Error (2912) An internal error has occurred trying to contact an agent on the servername.domain.com server.
Error (2916) VMM is unable to complete the request. The connection to the agent servername.domain.com was lost.
Error (2927) A Hardware Management error has occurred trying to contact server servername.domain.com.
Perform the steps documented in the More Information section to identify the cause of the issue.
On the Hyper-V host, review the “vmmAgent.msi_date_time.log” file that’s located in the %systemdrive%\ProgramData\VMMLogs directory.
Note: This log file may not exist if the failure occurs early in the installation process.
VMMCA is a diagnostic tool you can use to evaluate important configuration settings for computers that are either running VMM server roles or are acting as virtual machine hosts. The VMMCA scans the hardware and software configurations of the computers you specify, evaluates them against a set of predefined rules, and then provides you with error messages and warnings for any configurations that are not optimal.
To download the Virtual Machine Manager Configuration Analyzer, visit the following Microsoft website:
Verify the ports used by VMM to communicate with the Hyper-V host are not blocked by a firewall. By default, VMM uses the following ports to communicate with the Hyper-V host:
TCP port 443 TCP port 5985 TCP port 5986
For more information on the ports used by VMM, please reference the following TechNet article: http://technet.microsoft.com/en-US/library/gg710871.aspx
Perform the steps documented in the following article to check for duplicate SPNs:
970923 Unable to add a managed host in SCVMM 2008 and SCVMM 2012, Error 2927 (0x8033809d)
Log Name: Application Source: Microsoft-Windows-LoadPerf Event ID: 3012 Description: The performance strings in the Performance registry value is corrupted when process Performance extension counter provider. The BaseIndex value from the Performance registry is the first DWORD in the Data section, LastCounter value is the second DWORD in the Data section, and LastHelp value is the third DWORD in the Data section.
If the Event ID 3012 is logged on the host machine, perform the steps documented in the following knowledge base article to rebuild the performance counters:
2554336 How to manually rebuild Performance Counters for Windows Server 2008 64bit or Windows Server 2008 R2 systems
For the most current version of this article please see the following:
2742275 - How to troubleshoot issues when adding a Hyper-V host in System Center 2012 Virtual Machine Manager
J.C. Hornbeck | Knowledge Engineer | Management and Security Division
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