HDP PC Agent Recovery Media Creator Hangs at Mounting image Step 2/5. (HDP PC Agent v1.3.0 / HDP for PC/VM v2.3.1, QTS 5.2.8.3350, WIN 11 Pro, TS-451+ with 4x12TB HDD). Unable to create USB Boot Drive. This happens on each computer being backed up. The Boot Drive Creator worked properly with previous version of Net Bak tools. Guidance appreciated.
Thank goodness I’m not the only one 
I’ve tested on 3 machines now. (HDP PC Agent v1.3.0 / HDP for PC/VM v2.3.1. QTS 5.2.7.3297.
PC’s back up fine, but I cannot create media either. Stalls at step 2/5 as well. “Mounting Image”.
Subscribing to this topic.
I have the same problem. When will Qnap finally release a working application? Either it won’t back up, but it can create a disk, or vice versa. I’ve tried 3 different PCs and 4 different flash drives.
After further review and testing, I have found that I am able to create working USB recovery boot drives for four of seven computers tested so far of the eight Win 11 Pro based computers I backup with this NAS. In the other three cases, the USB creation process hangs in Step 2/5 Mounting boot image, and after about 15 minutes, produces a pop-up error message, “An unknown error has occurred. Error code 4.” This happens long before anything is written to the USB drive, so not likely related to the USB drive itself. So far, additional detective work has produced no useful insights. The only thing I see in common among these three failing computers is a large number of files on each. I have uninstalled and reinstalled the HDP PC Agent and the Win “kits” the Recovery Media Creator installs, but with no change in behavior. The symptoms seem to point to something in the three computers which is blocking execution of the Recovery Creator software since this software does work correctly on four other computers. The previous version of this software worked correctly on these three computers. This NAS is doing only simple BUs, nothing complex.
Yes, the BU is of little use if one cannot create recovery media.
I too have done more investigation and came to the same conclusions as you.
Agent installed under local admin
Run as admin
I have no 3rd party AV
Firewall Rules are present and appear to be correct
Have tried on 3 windows 11 PC’s, current OS (25H2)
Have seen the “error 4” once
Uninstalled, restarted and reinstalled, checked for registry entries, also deleted folders for ADK and PE if present (orphans)
Created System Restore Point before install on one PC for more testing options.
Ran SFC /scannow (no integrity violations)
Also ran DISM /Online /Cleanup-Image /RestoreHealth, but my images are clean and healthy.
Tested with 4 different USB drives (various brands / capacities)
One of the machines has quite a bit of data (images) but it has 60% free space and lots of RAM. So unlikely the culprit as you mentioned.
My systems were W10 and upgraded to W11. I do not have newly purchased hardware that came with W11 to try. This was the only thing I thought of, but couldn’t test against. (Also unlikely to be the issue, but possible I guess).
Solution found via QNAP trouble ticket response from Alex Chang:
Thank you for contacting our support team.
The issue is caused by a Windows security update (KB5072033).
Please follow the steps below as a workaround.
- Copy “C:\Program Files\QNAP\NetBakPCAgent\dotnet-install.ps1” to the desktop.
- Open “dotnet-install.ps1” with a text editor.
- Append “-UseBasicParsing” to the end of line 195.
- After completing the modification, copy the file back to “C:\Program Files\QNAP\NetBakPCAgent” and overwrite the original file.
Before
$response = Invoke-WebRequest -Uri $zipUri -Method Head
After
$response = Invoke-WebRequest -Uri $zipUri -Method Head -UseBasicParsing
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Also found this in FAQ’s
Thank you. I will try this tomorrow morning.
Media created successfully and I can log into my NAS.