VM is stuck at provisioning when creating from a customized image

I am kind of new and try to capture a image and create another VM from this image. 

Here is what I did.

1. Create a new VM from standard image, for example, windows server 2008 R2

2. RDP the VM and run sysrep . Just followed the this link. 

  2.1 Choose OOBE with Quit
  2.2 Logoff VM
  2.3 Shutdown from Azure management portal 
  2.4 Capture image

3. Spin a new VM from the saved customized image and the new Vm is stuck in Running(Provisioning)

So I found another link to fix the issue to remove %windir%\Panther\Unattend.xml. 

Then I re-do creating a new VM from the cutomized image. However, I still have the VM stuck in provisioning state. 

Does anyone have any suggestion?