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VMware: EVC – Method not found: ‘Vmomi.HostSystemArray EVCState.get_BadSoftwareHostsBlockingEVC()’

Today I got an error when selecting the “VMware EVC” option in the Cluster Settings at my vCenter 4.0 host with multiple HP Blades with same CPU. Error message:

Method not found: ‘Vmomi.HostSystemArray EVCState.get_BadSoftwareHostsBlockingEVC()’



This issue occurs when a system installed with vSphere 4.1 and you use vSphere 4.0 Client on that system to access vCenter Server 4.0.

To workaround this issue, install a vSphere 4.0 Client on a system on which you have not installed vSphere4.1 Client earlier and then update the EVC cluster using the vSphere 4.0 Client.


Source: VMware


Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.

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  1. January 7th, 2011  (Quote) at 15:19  (Quote) | #1

    In my opinion, lack of quality control.

    Check out my post from earlier week ->

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  2. michael
    January 8th, 2011  (Quote) at 10:18  (Quote) | #2

    Additionally, “Storage Views” tab does not appear and search is not working.
    KB article with workaround:

  3. porvozik
    January 9th, 2011  (Quote) at 10:58  (Quote) | #3

    Thanks for this solution

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