What does “A referral was returned from the server” on Windows mean?

It turns out, it can mean the binary you are running has a bad certificate.

Bust this.

I downloaded the latest insider preview for the Windows 10 ADK.

Then I simply wanted to capture a trace…

Ok…so, weird? So I launch a command prompt, try it that way, (WPR works fine, just no UI btw).


So I procmon’d it. ‘Cause, “when in doubt, procmon

Why is WPRUI.exe being scanned heavily by Defender? What gives?

Ok, and what is BAM.sys? Exactly?

So, I did some searching, and someone noticed if they get this error “A referral was returned from the server” it meant digital sigs were busted… so I checked. Surely Microsoft didn’t ship a binary with a bad cert…right?


So that’s a quick and dirty “Why the hell is this happening” brought to you by the dude.




The dude is out

Dude here, I’ve left Microsoft, again. I don’t get notified when comments are left here as a result. Apologies for being a bad curator.

I can’t take this content with me, I don’t think. So leaving here “for the record”.

Best of luck,


What does the new Microsoft Ultimate Power Plan do? (not much)

There has been some excitement in the announcement of Microsoft’s new Ultimate Power Plan. This power plan, for those who haven’t heard about it, is destined for Windows 10 Professional for Workstations. The setting also is present in Windows 10 Professional and Enterprise build 1803, but you have to add it in an administrative cmdline.

powercfg -duplicatescheme e9a42b02-d5df-448d-aa00-03f14749eb61


After doing this, it appears in your Power Options:

Ultimate Power is ready!

So, what does it do exactly?

Well, right now, I don’t think it does anything High Performance doesn’t do.

What what?!

Yeah, so here I am running minerd, a CPU hashing program. It’s parked on 4 cores of my AMD Ryzen 2700x.

Now what is the hash rate for each. The same.

hash rates on each plan

So, what gives?

Do a dump of High Performance, and Ultimate. It’s not hard.


set power plan to high performance
powercfg -query > C:\temp\high.txt
change to your power plan to ultimate
powercfg -query > C:\temp\ultimate.txt


So what’s next?

Uh, nothing? I’m personally staying on Ryzen because it works a ton better than Balanced and saves a smidge of power. For an Intel in a production environment? High. What about Ultimate? Meh for now. Sorry Microsoft.

Other power articles:


Server 2012 and balanced power plan

Server 2012 and balanced power plan, part deux – processor queue length