Azure Stack: HLH Upgrade A Positional Parameter Cannot be Found Inaccessible Network Share

The PnU tool fails to attach the HLH ISO file to the iDRAC when using a credential similar to below:

Connected Console Username: domain\username

Error details: 

2025-05-08 01:55:04.350 +03:00 [INF] Settings ISO found at C:\Program Files\Dell EMC\VxRack AS Patch and Update Automation\PSScripts\HLH\Windows\OSDShare\PnU-Setup.iso
2025-05-08 01:55:04.356 +03:00 [INF] HLH ISO found at C:\Program Files\Dell EMC\VxRack AS Patch and Update Automation\PSScripts\HLH\Windows\OSDShare\MS2406_Dell2411.4_Redeployment.iso
2025-05-08 01:55:04.362 +03:00 [INF] Attaching HLH OS ISO for iDRAC 172.16.112.2.
2025-05-08 01:55:04.686 +03:00 [INF] OSD initiated successfully.
2025-05-08 01:55:05.693 +03:00 [INF] OSD Task State :
2025-05-08 01:55:05.788 +03:00 [ERR] A positional parameter cannot be found that accepts argument 'Inaccessible network share.'.
2025-05-08 01:55:05.792 +03:00 [INF] Validating iDRAC credentials and creating session
2025-05-08 01:55:05.796 +03:00 [INF] Checking connectivity for HLH iDRAC

The API for iDRAC does not work if using a domain credential "domain\username" for the Connected Console Username in the PnU automation tool. 

To work around this issue, use a local administrator account without a domain name.

Connected Console Username: testuser