This article discusses how to resolve the host in not responding state due to the following error.

 

Error (20552)

VMM does not have appropriate permissions to access the resource on the host2.lab.com server.

Recommended Action

Ensure that Virtual Machine Manager has the appropriate rights to perform this action.

Also, verify that CredSSP authentication is currently enabled on the service configuration of the target computer host4.lab.com. To enable the CredSSP on the service configuration of the target computer, run the following command from an elevated command line: winrm set winrm/config/service/auth @{CredSSP=”true”}

  

Error (20552)

VMM does not have appropriate permissions to access the resource on the host1.lab.com server. 

Recommended Action

Ensure that Virtual Machine Manager has the appropriate rights to perform this action. 

Also, verify that CredSSP authentication is currently enabled on the service configuration of the target computer host1.lab.com. To enable the CredSSP on the service configuration of the target computer, run the following command from an elevated command line: winrm set winrm/config/service/auth @{CredSSP=”true”}

 

Warning (13926)

Host cluster host3.lab.com was not fully refreshed because not all of the nodes could be contacted. Highly available storage and virtual switch information reported for this cluster might be inaccurate.

Recommended Action

Ensure that all the nodes are online and do not have Not Responding status in Virtual Machine Manager. Then refresh the host cluster again.

 

Cause:

This is happened if you have changed your action account which is assigned to host.

 

Resolution:

To resolve this issue, please update the password for the action account for the host under “Run As Account”

Please check the “Run As Account” for the problematic hosts on VMM console. Do a right click on each host and check the host access under properties.

 

 

Now go to Settings >> Run As Accounts >> vmmadmin (in my case as above screenshot)

 

 

And update the password.

 

 

Additional Links:

https://support.microsoft.com/en-in/help/2742246/troubleshooting-needs-attention-not-responding-and-access-denied-hosts

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