0x40000017 is returned when using the EDID example, why does the problem persist?

Hi,
I'm using IGCL to get the EDID, but when I use the EDID example you gave, it returns 'ctlEdidManagement:READ EDID 1 returned failure code: 0x40000017', which prevents me from proceeding with my work down.
I ran it with admin privileges, but it still does.
I see that the previous issure says it has been solved, but why is the problem still there? 
How do I get the EDID correctly?
Thanks!