P PoliticalBonobo Member Joined Aug 20, 2015 Posts 16 Jun 11, 2016 #1 When I run WPA, I get Wdf01000.sys showing as the worst DPC/ISR offender. I understand it's usually some other driver that's causing the issue. However, I can't seem to find what's causing the interrupts because in the function column is listed "?", with no other info. See screen capture. How do I get WPA to show what's actually disrupting wdf01000.sys?