USB drives not accessible until I join a domain

Hi,
I´ve been struggling with this problem for a loong time now.
Simply put, I want to use a usb drive in a laptop running Windows 7, and the device is detected correctly but Windows says that I need to format it. And in My Computer the drive has got a letter but when I doubleclick it it says it´s unaccessible. But if
I join the laptop to my customers AD it suddenly works as it should.
Since I discovered that, I just ignored it since all computers would join the domain, but now I need to install several laptops that´s not going to be ad-joined. So I need help solving this usb problem.
The customers uses laptops(Dall Latitude Exxx models) only and we install these using WDS. I think that all models of laptops have this issue and all usb drives. I haven´t been able to narrow it down to a certain model or anything else.
Everything else works as they should. The usb ports works fine using mouse and keyboard and similar. It´s only usb drives that are the problem.
I know that the hardware isn´t faulty since I can boot up using Linux and everything is fine, plus when I join the domain everything is also fine.
I have tried reinstalling chipset/usb drivers but nothing has helped. Also sfc /scannow doesn´t help.
Using gpedit.msc I set everything in "Users/Administrative/System/Access to removable storage" to inactive but this makes no difference.
I have not had this problem outside this customer.
Does anyone have any ideas? If so, please help!
Regards,
//Andreas..

Hi,
we should figure out what’s the difference between the two situations.  I have the following thoughts to narrow down this cause:
Do you have preinstalled any security applications in your image?
Does this issue occur to all USB devices?
After  you join the domain, can you log on with a local account to access USB devices?
You can get the security policies via rsop.msc as well.
If you have any feedback on our support, please click
here
Alex Zhao
TechNet Community Support

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    Thanks a lot !
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