Probably best to just go into Device Manager and disable the 'Oculus Virtual Audio Device' in 'Sound video and game controllers' its of no use at all unless you have a Quest.
Please add your experience to the bug tracking
I've created so we could hope a quick fix or a workaround : (I can not
post the link on this forum so here is the path)
changelog > click the first link > click the small bug icon at the
bottom left corner > "Last Oculus software update make system crash :
Blue screen of death irql_not_less_or_equal (portcls.sys failed)"
This is the bug reporting page for Developers. If you are a user needing help with an Oculus device, please visit If you are a developer, please make sure you are signed in with an Oculus account tied to your company organization.