[Windows 7] Drivers from a network folder

http://technet.microsoft.com/en-us/library/dd919224%28WS.10%29.aspx

I have my singed drivers on a network folder \\network\install\Drivers7

I have already insert the needed certificates.

I have added the network path to the DevicePath key:

REG ADD "HKLM\Software\Microsoft\Windows\CurrentVersion" /v DevicePath /d "%SystemRoot%\inf;\\network\install\Drivers7" /t reg_expand_sz /f

When i try to scan for new hardware... "No driver found"

If i copy my drivers to a local folder and change the DevicePath key, everything works great!

REG ADD "HKLM\Software\Microsoft\Windows\CurrentVersion" /v DevicePath /d "%SystemRoot%\inf;D:\Drivers7" /t reg_expand_sz /f

The account I'm logged in, belongs to Administrators local group.

I've also tried while logged in as Administrator.

My Network Location is set to "Home Network".

I've also tried changing the LAN Manger authentication level through local group policy.

Am i doing something wrong?

Thanks in advance