Unable to open vSphere Client

Posted on 2012-08-17
Last Modified: 2016-07-23
I am trying to connect to a vCenter Server using vSphere client from my local computer but get the attached error message:

VirtualInfrastructure.Utils.Assembly.Resolver threw an exception

It was fine yesterday but today, no its broken.

If I remote desktop to the actual server running vCenter I can open up the vSphere client fine, its just remotely from my computer

I'm running Windows 7 64 bit

We use vCenter and vSphere version 5.0 running on Windows Server 2008

I've googled the problem and it seems to be an issue from version 4.0

Any ideas how i fix this?

Thanks in advance
Question by:Tony
    LVL 116

    Expert Comment

    by:Andrew Hancock (VMware vExpert / EE MVE)
    This can be caused by

    1. .NET Framework Updates
    2. Lack of disk space
    3. Temp files (remove and clear temp files from \temp folders)

    Restart PC, and try again.
    LVL 1

    Author Comment

    Thanks for the reply

    I've now tried the following:

    1) Reinstall .Net Framework
    2) Checked disk space (over 30Gb free)
    3) Emptied all my temp folders
    4) Removed and reinstalled vSphere Client
    5) Rebooted the computer between each step above

    I'm still unable to sign into the client.  It gets as far as "discovering plugins" and then brings up the same error message
    LVL 3

    Expert Comment

    LVL 1

    Author Comment


    Just tried that and I still get the same error message

    Any other ideas?
    LVL 40

    Accepted Solution

    Try this KB; seems to be the exact error you're receiving:

    Let us know.

    LVL 8

    Expert Comment

    please do this and revert

        Disable Routing and Remote Access service.
        Restart vCenter Server service.
    LVL 1

    Author Closing Comment

    This fixed the problem with vsphere but because it was an unsupported fix it also started causing problems with other programs that use .net framework

    After trying evertyhing, and even though the above fix did work, i still ended up reimaging my laptop to resolve the problem fully

    Thanks for all the help from everyone

    Expert Comment

    Hi Tony and all,

    I am facing the same problem. I have done all except install and run the KB. Was there any other solution to this? Why I ask is because I have critical applications running on my machine and do not have a backup at the moment to back up all my data onto. I have 140GB free and Temp folder has 10MB of files.

    Advise on the best way forward.

    LVL 116

    Expert Comment

    by:Andrew Hancock (VMware vExpert / EE MVE)
    @Member_2_7968982 Please post a new question, this post is old, and closed.

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