Cannot install the vCenter agent service. Unknown installer error

If you have Virtual Center U1 installed you may experience ESXi servers disconnecting without a reason. After the host has been disconnected you cannot Connect/Add it back. The most common error when you try to add/connect ESXi host back to Virtual Center is:

Cannot install the vCenter agent service. Unknown installer error

From my very own experience this is a problem with / partition allocated too small. The VirtualCenter tries to upload specific .tgz files (for aam) and there is no free space available to extract the tgz file. I will post a quick fix shortly. Vmware has also posted information that they will be releasing a patch very shortly.


Comments

  1. Bill says:

    Thanks, worked for me, / volume had filed up as it’s was a bit small from the upgrade.

  2. Thawong says:

    Cannot install the vCenter agent service. Unknown installer error

  3. Rick says:

    Hello! one of the reasons why you’re receiving the “Cannot install the vCenter agent service. Unknown installer error” is due to the vcenter server having minimum RAM to perform the request weather it’s adding a host, etc. Try increasing the RAM on the Vcenter server to resolve this issue. It worked for me.

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