NewsMicrosoft releases Windows Home Server 2011 Computer Monitoring Error...

Microsoft releases Windows Home Server 2011 Computer Monitoring Error hotfix


- Advertisement -

Some users of Windows Home Server 2011 have been reporting Computing Monitoring Errors. If you are one of those users then Microsoft have just released a hotfix to cure your problem.

WHS 2011 hotfix


After you updated a server that is running Windows Home Server 2011 with the Update Rollup 2 for Home Server 2011, you receive the warning “Computer Monitoring Error” in the Home Server 2011 Launchpad or Dashboard. You receive this warning every 30 minutes.
This happens after the system installs Update Rollup 2. You find the following exceptions in the SharedServiceHost-AlertServiceConfig.log file.

120222.003152.9814: NetworkHealthEngine: Exception happened in Microsoft.WindowsServerSolutions.NetworkHealth.Engine.BinaryActionDefinition: System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.WindowsServerSolutions.Servicing.Alerts.MacClientUpdateCondition.Run(IActionContext context)

Additionally, this can occur when you have removed a previously connected network computer from the server.
The log file is located in the following folder:

%Programdata%\Microsoft\Windows Server\Logs

You do not receive a warning reminding you to update your Mac client connector. There is no effect on other alerts or product features.


This occurs when one of the Alert evaluation components in Home Server 2011 tries to iterate through the records of all client computers in the network. It throws an unhandled exception when the component accesses the record of a client computer that was removed.


A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

You must submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Request the hotfix from here
Andrew Edney
Andrew Edney
I am the owner and editor of this site. I have been interested in gadgets and tech since I was a little kid. I have also written a number of books on various tech subjects. I also blog for The Huffington Post and for FHM. And I am honoured to be a Microsoft MVP since January 2008 - again this year as an Xbox MVP.


  1. Hey Andy,

    Great find on the WHS 2011 Hotfix (Been a pain in my butt for over a month now) anyways I sent you an e-mail concerning the Hotfix for the same problem on Windows Storage Server 2008 R2 Essentials and Small Business 2011 Essentials.

    I would have posted here but the links disappear as soon as I refresh the website.


  2. Yay, at last, no annoying warnings of “Monitoring Error”. Thanks for the post and link Andrew, worked a treat.

Comments are closed.

Stay connected



Review: ZR 01 Zen Running shoes

An environmentally friendly running shoe that is approved by the Vegetarian Society.

Review: Samurai Riot

Review: TombStar

You might also likeRELATED
Recommended to you