Enable password-blank Run As on Home Premium?

I found this, it may be for XP but suggestion to use regshot on a Pro Windows 7 PC to capture the registry change may solve it for you

Take a look at this registry key which may disable it. I believe when set to zero as shown.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\limitblankpassworduse:
0x00000000

I use a free program called Regshot to do comparisons of the registry before and after such a change. There are other programs that may be a bit easier to use but for the price and the fact that it does not have to be installed make Regshot a neat utility to have.

http://www.snapfiles.com/get/regshot.html --- Regshot.

Source of Information

I checked my Windows 7 Pro gpedit, that group policy location does not exist, they must have changed it in Windows 7 for security reasons.