Allow Standard Users to Install Drivers For HP3550n

[kennysarmy]

Progress.

 

After reading this:

Christjan's IT Minutes » Annoying Lenovo device initialization at first logon

 

Specifically this part:

To instruct a device NOT to do additional initialization, the registry value “ConfigFlags” must be set to 0 in key “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum” followed by the enum path (the device ID captured above). So full registry path to the device would be like: “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\usb\vid_0a5c&pid_217f\00271396b088”.

 

It seems “ConfigFlags” value 0×00020000 (131072) causes the extra initialization, so change it to 0.

 

I logged on to one of the affected PC's and looked in :

 

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\USB and searched for all ConfigFlags that = 0x000200 (131072)

 

From this I could ascertain the ClassGUID for any that were 0x000200 (131072)

I found one which was {745a17a0-74d3-11d0-b6fe-00a0c90f57da}

 

I've added this to a GPO :

 

Policies

Administrative Templates

Policy definitions (ADMX files) retrieved from the central store.System/Driver Installation

Policy Setting Comment

Allow non-administrators to install drivers for these device setup classes Enabled

Allow Users to install device drivers for these classes:

{4d36e96f-e325-11ce-bfc1-08002be10318}

{4d36e96b-e325-11ce-bfc1-08002be10318}

{745a17a0-74d3-11d0-b6fe-00a0c90f57da}

 

Initial testing seems to suggest this suppresses the UAC prompt....

[kennysarmy]

Annoyingly I've pulled another random machine in for testing this and the problem still remains...

 

The only items in the registry that have the “ConfigFlags” value 0×00020000 (131072) are those that are also :

ClassGUID = {745a17a0-74d3-11d0-b6fe-00a0c90f57da}

 

Which is covered by my existing GPO as detailed above.

 

I've run Group Policy Results Wizard and this policy IS being applied.

 

Stumped again...

 

Going to re-image with windows 7 64bit as part of an ongoing upgrade to see if that clears the issue....