How to resize Windows partition for VMWare virtual machine (Thick Provision Eager Zeroed)?

* I turn the virtual machine off and when I go to Edit Settings / Hard Disk 1, the Provisioned Size is greyed out and I cannot change it. See the picture for more details.


Question: Any idea how to make the hdd bigger in this case? 

* This may not be the case with you but what worked for me in my situation was to "Remove" all the snapshots from the VM (I had 5 in this case). This re-enabled the HD options again. This actually applied to one of my Windows 2008 Servers as well.