I'm unable to add hosts to the session pool of AVD

Question

Error: Code="VMExtensionProvisioningError" Message="VM has reported a failure when processing extension 'sessionHostVmext1'. Error message: \"The DSC Extension failed to execute: Error downloading https://wvdportalstorageblob.blob.core.windows.net/galleryartifacts/Configuration_02-23-2022.zip after 17 attempts: The remote name could not be resolved: 'wvdportalstorageblob.blob.core.windows.net'.\r\nMore information about the failure can be found in the logs located under 'C:\WindowsAzure\Logs\Plugins\Microsoft.Powershell.DSC\2.83.2.0' on the VM.\"\r\n\r\nMore information on troubleshooting is available at https://aka.ms/VMExtensionDSCWindowsTroubleshoot "

Answer 1

Hi,

if I get you correct, you're unable to add hosts to the session pool of AVD?

If this is the case, this error might be showing up because the provisioned VM isn't capable of accessing the storage blob and downloading it. Typical reasons for this are:

• Network Route Table is not correct
• Firewall in front of VM and no allow rule
• Network Security Group of Subnet prevents VM from accessing Internet outbound

Please make shure that your network is setup correctly and the VM is capable of communicating to Internet outbound. To check this, you could use the Network Watcher https://learn.microsoft.com/en-us/azure/network-watcher/network-watcher-connectivity-portal to check connectivity.

Cheers,
Sebastian

Answer 2

My DNS server was not working that's why.