Altaro VM Backup Support Centre



Unable to deploy Altaro Hyper-V Host Agent: "The Windows Installer Service could not be accessed."

Last Updated: Aug 15, 2016 03:45PM CEST

PROBLEM


In some cases when attempting to add a Hyper-V host in Altaro VM Backup you might get an error message saying that it's unable to add the host, specifically: "Failed to configure Hyper-V Host Agent."

Upon attempting to install the Altaro Hyper-V Host Agent manually you get an error saying: "The Windows Installer Service could not be accessed. This can occur if you are running Windows in safe mode, or if the Windows Installer is not correctly installed. Contact your support personnel for assistance."



 

CAUSE


This error usually happens on machines running Server Core since the feature 'WoW64 Support' is not installed automatically.


 

SOLUTION

 
Run the command "Get-WindowsFeature" through PowerShell whereby you should see the following feature marked as 'Available':



Next, run "Install-WindowsFeature WoW64-Support" in order to install this feature. Once installed, reboot the machine and try adding the host in question again.
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