Здравствуйте, всем!

Вот здесь у человека подобная проблема:
http://www.winvistatips.com/user-application-not-able-open-ndis-im-driver-t194216.html.

> Hi,
> I have developped NDIS IM driver. I am facing one problem with driver.
> Sometimes, Driver gets installed but If user land test application is not
> able to
> open Driver handle. I have to restart the system the everything works fine..
>
> Please suggset me how to look this problem.

И в качестве решения предлагают следующее:

Well, you start by finding out why the open failed...

Handles don't just "fail to open". They fail for a reason. Typically
you can use the GetLastError function to find out the reason.

With the reason in hand you go forward. If it is an access denied
error, study about permissions.
...

Thomas F. Divine
http://www.pcausa.com

Значит, все-таки с помощью прав можно что-то сделать...