Avamar: Hyper-V registration fails with "Failed to perform authenticate operation"

Hyper-V Proxy cluster registration fails with the following messages in the av_cluster_config_wizard.log file:

av_cluster_config_wizard ERROR<0000>: Failed to perform authenticate operation 
av_cluster_config_wizard DEBUG<0000>: UpdateStatusAndList: Unable to validate user credentials and updated the 'WinClusterSvc' service 
av_cluster_config_wizard ERROR<0000>: Unable to validate user credentials and updated the 'WinClusterSvc' service 
av_cluster_config_wizard ERROR<0000>: Installation failed with the following error:
Failed in UserAuthentication.ValidateUser('EMCSERVER1', 'WinClusterSvc') 
av_cluster_config_wizard DEBUG<0000>: Changing ClusterConfigWizardData.CompletionStatus from 'InProgress' to 'Failure'. 
av_cluster_config_wizard DEBUG<0000>: UpdateStatus: Installation failed with the following error:
Failed in UserAuthentication.ValidateUser('EMCSERVER1', 'WinClusterSvc') 
 

Extra login security has been implemented on the Hyper-V server or cluster node:

 

 

1. To work around this issue, disable the following Group policy setting: 

Computer Configuration-->Administrative Templates-->Windows Components-->Credential User Interface-->Require trusted path for credential entry

Afterwards, run the following command to update the settings on the Hyper-V server: 

gpupdate /force

Then rerun the Avamar Cluster Configuration Wizard.

2. Configure a multiproxy client from PowerShell.

   a. Open PowerShell prompt (run as administrator).

   b. Change to the Avamar bin directory:

cd "C:\Program Files\avs\bin"

c. Run the following PowerShell commands to manually configure the cluster client:

Import-Module .\virtualclientconfig.dll


New-AvMultiProxyClient -NodeNames  EMCSERVER1,EMCSERVER2  -PluginName hypervvss

d. If the wizard completes successfully, there are no error messages.
e. Open the services and manually configure Avamar Windows Cluster Service to run under the same domain admin account as the logged-in user account.