My situation is thus:

Custom driver, that creates a device at \\.\ipstack
As an admin I am able to access it no problem, for instance: dir \\.\ipstack
returns request is not supported (which is fine)

As a user (ipStack) it returns: Access is denied.

I am using SetACL to check/set the permissions on my service. Is there a
windows tool that would do the same thing?

Running: "SetACL.exe -on \\.\ipStack -ot srv -actn list" returns:
"\\.\ipStack",2,"DACL(not_protected):PC9724362\ipS tack,full,allow,no_inheritance
:NT
AUTHORITY\SYSTEM,start_stop,allow,no_inheritance:B UILTIN\Administrators,full
,allow,no_inheritance:NT AUTHORITY\Authenticated
Users,read,allow,no_inheritance
:BUILTIN\Power Users,start_stop,allow,no_inheritance"

As you can see user ipStack should have full access. The permissions persist
after a reboot.

I am at the end of my rope, any help would be greatly appreciated.

Thanks,
chris