VM has reported a user failure when processing extension 'SessionHostConfig'

Question

Hi,

I'm trying to deploy a new session host with Azure Accelerator and i'm getting this issue all the time:

TOP ERROR

VM has reported a user failure when processing extension 'SessionHostConfig'. Please correct the error and try again. (publisher 'Microsoft.Compute' and type 'CustomScriptExtension'). Error code: '2'. Error message: 'Command execution finished, but failed because it returned a non-zero exit code of: '1'. The command had an error output of: 'Write-Log : [06/19/2026 19:06:31] Error <?xml version="1.0" encoding="utf-8"?><Error><Code>BlobNotFound</Code><Message>The specified blob does not exist. RequestId:6ef08fbb-f01e-0010-24db-ffe008000000 Time:2026-06-19T11:06:31.8803615Z</Message></Error...' For more information, check the instance view by executing Get-AzVmssVm or Get-AzVm (https://aka.ms/GetAzVm). These commands can be executed using CloudShell (https://aka.ms/CloudShell)'. Detailed error: ''. More information on troubleshooting is available at https://aka.ms/VMExtensionCSEWindowsTroubleshoot. (Code: VMExtensionProvisioningError)

Anyone knows what should we do to fix this issue?

Kind Regards