Windows 10 Kernel Debugging on Xen

Windows 10 Kernel Debugging on Xen

[Neil Sikka]

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Hello,
Has anyone gotten a Windows10 (Version 1709 of later) kernel debugger
attached when running the Windows10 debugger VM and the Windows10 debugee
VM on Xen 4.13.0 hypervisor? I am getting a "NIC hardware initialization
failed" error. I tried the suggestions in the discussion here (
https://bugzilla.redhat.com/show_bug.cgi?id=1947015):
-cpu
Skylake-Server-IBRS,ss=on,vmx=on,hypervisor=on,tsc-adjust=on,clflushopt=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaves=on,ibpb=on,amd-ssbd=on,
\
skip-l1dfl-vmentry=on,mpx=off,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KVMKVMKVM

note: i had to remove the following 2 arguments due to errors from QEMU:
pschange-mc-no=on
hv_vpindex

Here was the error:
C:\Users\user\Desktop\oldDebuggers\x64>kdnet.exe

Network debugging is supported on the following NICs:
busparams=0.4.0, Intel(R) PRO/1000 MT Network Connection, Plugged in.
The Microsoft hypervisor running this VM does not support KDNET.
Please upgrade to the hypervisor shipped in Windows 8 or WS2012 or later.

KDNET initialization failed.  Status = 0xC0000182.
NIC hardware initialization failed.

I am using an Intel e1000 NIC emulated through QEMU because its supposedly
a supported NIC for Windows kernel NET debugging.

Thanks in Advance!

-- 
My Blog: http://www.neilscomputerblog.blogspot.com/
Twitter: @neilsikka

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Re: Windows 10 Kernel Debugging on Xen

[Tamas K Lengyel]

I have managed to get windbg working with a serial bridge between two
Win10 VMs using the following script:
https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/serial-bridge.sh.
The debugee has to enable a couple options so that windbg can attach:
https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/debug.cmd.

Tamas

On Tue, Jun 22, 2021 at 12:01 PM Neil Sikka <neilsikka@gmail.com> wrote:
>
> Hello,
> Has anyone gotten a Windows10 (Version 1709 of later) kernel debugger attached when running the Windows10 debugger VM and the Windows10 debugee VM on Xen 4.13.0 hypervisor? I am getting a "NIC hardware initialization failed" error. I tried the suggestions in the discussion here (https://bugzilla.redhat.com/show_bug.cgi?id=1947015):
> -cpu Skylake-Server-IBRS,ss=on,vmx=on,hypervisor=on,tsc-adjust=on,clflushopt=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaves=on,ibpb=on,amd-ssbd=on, \
> skip-l1dfl-vmentry=on,mpx=off,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KVMKVMKVM
>
> note: i had to remove the following 2 arguments due to errors from QEMU:
> pschange-mc-no=on
> hv_vpindex
>
> Here was the error:
> C:\Users\user\Desktop\oldDebuggers\x64>kdnet.exe
>
> Network debugging is supported on the following NICs:
> busparams=0.4.0, Intel(R) PRO/1000 MT Network Connection, Plugged in.
> The Microsoft hypervisor running this VM does not support KDNET.
> Please upgrade to the hypervisor shipped in Windows 8 or WS2012 or later.
>
> KDNET initialization failed.  Status = 0xC0000182.
> NIC hardware initialization failed.
>
> I am using an Intel e1000 NIC emulated through QEMU because its supposedly a supported NIC for Windows kernel NET debugging.
>
> Thanks in Advance!
>
> --
> My Blog: http://www.neilscomputerblog.blogspot.com/
> Twitter: @neilsikka

Re: Windows 10 Kernel Debugging on Xen

[Neil Sikka]

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Thanks for the quick response, Tamas. I tried what you said and windbg
waits and the debugee hangs when I click the break button in windbg, but I
don't see any output in windbg. This means that there is SOME communication
over the serial port that causes the debugee to hang when I click break.
Could it be a debugger protocol issue? I also tried the guidance here by
running the crlf program:
https://www.qubes-os.org/doc/windows-debugging/
But windbg waits and the debugee hangs in a similar manner.

What versions of WIndows and Xen are you using?

On Tue, Jun 22, 2021 at 12:10 PM Tamas K Lengyel <tamas.k.lengyel@gmail.com>
wrote:

> I have managed to get windbg working with a serial bridge between two
> Win10 VMs using the following script:
>
> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/serial-bridge.sh
> .
> The debugee has to enable a couple options so that windbg can attach:
>
> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/debug.cmd
> .
>
> Tamas
>
> On Tue, Jun 22, 2021 at 12:01 PM Neil Sikka <neilsikka@gmail.com> wrote:
> >
> > Hello,
> > Has anyone gotten a Windows10 (Version 1709 of later) kernel debugger
> attached when running the Windows10 debugger VM and the Windows10 debugee
> VM on Xen 4.13.0 hypervisor? I am getting a "NIC hardware initialization
> failed" error. I tried the suggestions in the discussion here (
> https://bugzilla.redhat.com/show_bug.cgi?id=1947015):
> > -cpu
> Skylake-Server-IBRS,ss=on,vmx=on,hypervisor=on,tsc-adjust=on,clflushopt=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaves=on,ibpb=on,amd-ssbd=on,
> \
> >
> skip-l1dfl-vmentry=on,mpx=off,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KVMKVMKVM
> >
> > note: i had to remove the following 2 arguments due to errors from QEMU:
> > pschange-mc-no=on
> > hv_vpindex
> >
> > Here was the error:
> > C:\Users\user\Desktop\oldDebuggers\x64>kdnet.exe
> >
> > Network debugging is supported on the following NICs:
> > busparams=0.4.0, Intel(R) PRO/1000 MT Network Connection, Plugged in.
> > The Microsoft hypervisor running this VM does not support KDNET.
> > Please upgrade to the hypervisor shipped in Windows 8 or WS2012 or later.
> >
> > KDNET initialization failed.  Status = 0xC0000182.
> > NIC hardware initialization failed.
> >
> > I am using an Intel e1000 NIC emulated through QEMU because its
> supposedly a supported NIC for Windows kernel NET debugging.
> >
> > Thanks in Advance!
> >
> > --
> > My Blog: http://www.neilscomputerblog.blogspot.com/
> > Twitter: @neilsikka
>


-- 
My Blog: http://www.neilscomputerblog.blogspot.com/
Twitter: @neilsikka

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Re: Windows 10 Kernel Debugging on Xen

[Tamas K Lengyel]

I used Xen 4.15 and a pretty new version of Windows 10. It is a bit
finicky, you have to run the debug commands on the debugee and then
reboot. When the VM is rebooting the domain ID changes so you have to
start the serial bridge then. Windbg will attach afterwards. Just make
sure both VMs have serial='pty' set in their config file.

Tamas

On Tue, Jun 22, 2021 at 12:33 PM Neil Sikka <neilsikka@gmail.com> wrote:
>
> Thanks for the quick response, Tamas. I tried what you said and windbg waits and the debugee hangs when I click the break button in windbg, but I don't see any output in windbg. This means that there is SOME communication over the serial port that causes the debugee to hang when I click break. Could it be a debugger protocol issue? I also tried the guidance here by running the crlf program:
> https://www.qubes-os.org/doc/windows-debugging/
> But windbg waits and the debugee hangs in a similar manner.
>
> What versions of WIndows and Xen are you using?
>
> On Tue, Jun 22, 2021 at 12:10 PM Tamas K Lengyel <tamas.k.lengyel@gmail.com> wrote:
>>
>> I have managed to get windbg working with a serial bridge between two
>> Win10 VMs using the following script:
>> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/serial-bridge.sh.
>> The debugee has to enable a couple options so that windbg can attach:
>> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/debug.cmd.
>>
>> Tamas
>>
>> On Tue, Jun 22, 2021 at 12:01 PM Neil Sikka <neilsikka@gmail.com> wrote:
>> >
>> > Hello,
>> > Has anyone gotten a Windows10 (Version 1709 of later) kernel debugger attached when running the Windows10 debugger VM and the Windows10 debugee VM on Xen 4.13.0 hypervisor? I am getting a "NIC hardware initialization failed" error. I tried the suggestions in the discussion here (https://bugzilla.redhat.com/show_bug.cgi?id=1947015):
>> > -cpu Skylake-Server-IBRS,ss=on,vmx=on,hypervisor=on,tsc-adjust=on,clflushopt=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaves=on,ibpb=on,amd-ssbd=on, \
>> > skip-l1dfl-vmentry=on,mpx=off,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KVMKVMKVM
>> >
>> > note: i had to remove the following 2 arguments due to errors from QEMU:
>> > pschange-mc-no=on
>> > hv_vpindex
>> >
>> > Here was the error:
>> > C:\Users\user\Desktop\oldDebuggers\x64>kdnet.exe
>> >
>> > Network debugging is supported on the following NICs:
>> > busparams=0.4.0, Intel(R) PRO/1000 MT Network Connection, Plugged in.
>> > The Microsoft hypervisor running this VM does not support KDNET.
>> > Please upgrade to the hypervisor shipped in Windows 8 or WS2012 or later.
>> >
>> > KDNET initialization failed.  Status = 0xC0000182.
>> > NIC hardware initialization failed.
>> >
>> > I am using an Intel e1000 NIC emulated through QEMU because its supposedly a supported NIC for Windows kernel NET debugging.
>> >
>> > Thanks in Advance!
>> >
>> > --
>> > My Blog: http://www.neilscomputerblog.blogspot.com/
>> > Twitter: @neilsikka
>
>
>
> --
> My Blog: http://www.neilscomputerblog.blogspot.com/
> Twitter: @neilsikka

Re: Windows 10 Kernel Debugging on Xen

[Neil Sikka]

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I tried that, but it seems like I'm getting an interrupt storm on the
debugger VM (CPU spends all its time in the kernel) when I try to attach
the debugger. This observation furthers my suspicion that there is
communication, but there is something wrong with the protocol...

On Tue, Jun 22, 2021 at 12:43 PM Tamas K Lengyel <tamas.k.lengyel@gmail.com>
wrote:

> I used Xen 4.15 and a pretty new version of Windows 10. It is a bit
> finicky, you have to run the debug commands on the debugee and then
> reboot. When the VM is rebooting the domain ID changes so you have to
> start the serial bridge then. Windbg will attach afterwards. Just make
> sure both VMs have serial='pty' set in their config file.
>
> Tamas
>
> On Tue, Jun 22, 2021 at 12:33 PM Neil Sikka <neilsikka@gmail.com> wrote:
> >
> > Thanks for the quick response, Tamas. I tried what you said and windbg
> waits and the debugee hangs when I click the break button in windbg, but I
> don't see any output in windbg. This means that there is SOME communication
> over the serial port that causes the debugee to hang when I click break.
> Could it be a debugger protocol issue? I also tried the guidance here by
> running the crlf program:
> > https://www.qubes-os.org/doc/windows-debugging/
> > But windbg waits and the debugee hangs in a similar manner.
> >
> > What versions of WIndows and Xen are you using?
> >
> > On Tue, Jun 22, 2021 at 12:10 PM Tamas K Lengyel <
> tamas.k.lengyel@gmail.com> wrote:
> >>
> >> I have managed to get windbg working with a serial bridge between two
> >> Win10 VMs using the following script:
> >>
> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/serial-bridge.sh
> .
> >> The debugee has to enable a couple options so that windbg can attach:
> >>
> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/debug.cmd
> .
> >>
> >> Tamas
> >>
> >> On Tue, Jun 22, 2021 at 12:01 PM Neil Sikka <neilsikka@gmail.com>
> wrote:
> >> >
> >> > Hello,
> >> > Has anyone gotten a Windows10 (Version 1709 of later) kernel debugger
> attached when running the Windows10 debugger VM and the Windows10 debugee
> VM on Xen 4.13.0 hypervisor? I am getting a "NIC hardware initialization
> failed" error. I tried the suggestions in the discussion here (
> https://bugzilla.redhat.com/show_bug.cgi?id=1947015):
> >> > -cpu
> Skylake-Server-IBRS,ss=on,vmx=on,hypervisor=on,tsc-adjust=on,clflushopt=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaves=on,ibpb=on,amd-ssbd=on,
> \
> >> >
> skip-l1dfl-vmentry=on,mpx=off,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KVMKVMKVM
> >> >
> >> > note: i had to remove the following 2 arguments due to errors from
> QEMU:
> >> > pschange-mc-no=on
> >> > hv_vpindex
> >> >
> >> > Here was the error:
> >> > C:\Users\user\Desktop\oldDebuggers\x64>kdnet.exe
> >> >
> >> > Network debugging is supported on the following NICs:
> >> > busparams=0.4.0, Intel(R) PRO/1000 MT Network Connection, Plugged in.
> >> > The Microsoft hypervisor running this VM does not support KDNET.
> >> > Please upgrade to the hypervisor shipped in Windows 8 or WS2012 or
> later.
> >> >
> >> > KDNET initialization failed.  Status = 0xC0000182.
> >> > NIC hardware initialization failed.
> >> >
> >> > I am using an Intel e1000 NIC emulated through QEMU because its
> supposedly a supported NIC for Windows kernel NET debugging.
> >> >
> >> > Thanks in Advance!
> >> >
> >> > --
> >> > My Blog: http://www.neilscomputerblog.blogspot.com/
> >> > Twitter: @neilsikka
> >
> >
> >
> > --
> > My Blog: http://www.neilscomputerblog.blogspot.com/
> > Twitter: @neilsikka
>


-- 
My Blog: http://www.neilscomputerblog.blogspot.com/
Twitter: @neilsikka

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Re: Windows 10 Kernel Debugging on Xen

[Tamas K Lengyel]

Make sure windbg is already waiting for the connection from the
debugee by the time Windows starts booting. If you try to attach
windbg later it won't work. It worked for me but obviously YMMV.

Tamas

On Tue, Jun 22, 2021 at 2:07 PM Neil Sikka <neilsikka@gmail.com> wrote:
>
> I tried that, but it seems like I'm getting an interrupt storm on the debugger VM (CPU spends all its time in the kernel) when I try to attach the debugger. This observation furthers my suspicion that there is communication, but there is something wrong with the protocol...
>
> On Tue, Jun 22, 2021 at 12:43 PM Tamas K Lengyel <tamas.k.lengyel@gmail.com> wrote:
>>
>> I used Xen 4.15 and a pretty new version of Windows 10. It is a bit
>> finicky, you have to run the debug commands on the debugee and then
>> reboot. When the VM is rebooting the domain ID changes so you have to
>> start the serial bridge then. Windbg will attach afterwards. Just make
>> sure both VMs have serial='pty' set in their config file.
>>
>> Tamas
>>
>> On Tue, Jun 22, 2021 at 12:33 PM Neil Sikka <neilsikka@gmail.com> wrote:
>> >
>> > Thanks for the quick response, Tamas. I tried what you said and windbg waits and the debugee hangs when I click the break button in windbg, but I don't see any output in windbg. This means that there is SOME communication over the serial port that causes the debugee to hang when I click break. Could it be a debugger protocol issue? I also tried the guidance here by running the crlf program:
>> > https://www.qubes-os.org/doc/windows-debugging/
>> > But windbg waits and the debugee hangs in a similar manner.
>> >
>> > What versions of WIndows and Xen are you using?
>> >
>> > On Tue, Jun 22, 2021 at 12:10 PM Tamas K Lengyel <tamas.k.lengyel@gmail.com> wrote:
>> >>
>> >> I have managed to get windbg working with a serial bridge between two
>> >> Win10 VMs using the following script:
>> >> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/serial-bridge.sh.
>> >> The debugee has to enable a couple options so that windbg can attach:
>> >> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/debug.cmd.
>> >>
>> >> Tamas
>> >>
>> >> On Tue, Jun 22, 2021 at 12:01 PM Neil Sikka <neilsikka@gmail.com> wrote:
>> >> >
>> >> > Hello,
>> >> > Has anyone gotten a Windows10 (Version 1709 of later) kernel debugger attached when running the Windows10 debugger VM and the Windows10 debugee VM on Xen 4.13.0 hypervisor? I am getting a "NIC hardware initialization failed" error. I tried the suggestions in the discussion here (https://bugzilla.redhat.com/show_bug.cgi?id=1947015):
>> >> > -cpu Skylake-Server-IBRS,ss=on,vmx=on,hypervisor=on,tsc-adjust=on,clflushopt=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaves=on,ibpb=on,amd-ssbd=on, \
>> >> > skip-l1dfl-vmentry=on,mpx=off,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KVMKVMKVM
>> >> >
>> >> > note: i had to remove the following 2 arguments due to errors from QEMU:
>> >> > pschange-mc-no=on
>> >> > hv_vpindex
>> >> >
>> >> > Here was the error:
>> >> > C:\Users\user\Desktop\oldDebuggers\x64>kdnet.exe
>> >> >
>> >> > Network debugging is supported on the following NICs:
>> >> > busparams=0.4.0, Intel(R) PRO/1000 MT Network Connection, Plugged in.
>> >> > The Microsoft hypervisor running this VM does not support KDNET.
>> >> > Please upgrade to the hypervisor shipped in Windows 8 or WS2012 or later.
>> >> >
>> >> > KDNET initialization failed.  Status = 0xC0000182.
>> >> > NIC hardware initialization failed.
>> >> >
>> >> > I am using an Intel e1000 NIC emulated through QEMU because its supposedly a supported NIC for Windows kernel NET debugging.
>> >> >
>> >> > Thanks in Advance!
>> >> >
>> >> > --
>> >> > My Blog: http://www.neilscomputerblog.blogspot.com/
>> >> > Twitter: @neilsikka
>> >
>> >
>> >
>> > --
>> > My Blog: http://www.neilscomputerblog.blogspot.com/
>> > Twitter: @neilsikka
>
>
>
> --
> My Blog: http://www.neilscomputerblog.blogspot.com/
> Twitter: @neilsikka

Re: Windows 10 Kernel Debugging on Xen

[Neil Sikka]

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I figured it out. Microsoft did not document that testsigning needs to be
enabled for kdnet to work.

On Tue, Jun 22, 2021 at 2:12 PM Tamas K Lengyel <tamas.k.lengyel@gmail.com>
wrote:

> Make sure windbg is already waiting for the connection from the
> debugee by the time Windows starts booting. If you try to attach
> windbg later it won't work. It worked for me but obviously YMMV.
>
> Tamas
>
> On Tue, Jun 22, 2021 at 2:07 PM Neil Sikka <neilsikka@gmail.com> wrote:
> >
> > I tried that, but it seems like I'm getting an interrupt storm on the
> debugger VM (CPU spends all its time in the kernel) when I try to attach
> the debugger. This observation furthers my suspicion that there is
> communication, but there is something wrong with the protocol...
> >
> > On Tue, Jun 22, 2021 at 12:43 PM Tamas K Lengyel <
> tamas.k.lengyel@gmail.com> wrote:
> >>
> >> I used Xen 4.15 and a pretty new version of Windows 10. It is a bit
> >> finicky, you have to run the debug commands on the debugee and then
> >> reboot. When the VM is rebooting the domain ID changes so you have to
> >> start the serial bridge then. Windbg will attach afterwards. Just make
> >> sure both VMs have serial='pty' set in their config file.
> >>
> >> Tamas
> >>
> >> On Tue, Jun 22, 2021 at 12:33 PM Neil Sikka <neilsikka@gmail.com>
> wrote:
> >> >
> >> > Thanks for the quick response, Tamas. I tried what you said and
> windbg waits and the debugee hangs when I click the break button in windbg,
> but I don't see any output in windbg. This means that there is SOME
> communication over the serial port that causes the debugee to hang when I
> click break. Could it be a debugger protocol issue? I also tried the
> guidance here by running the crlf program:
> >> > https://www.qubes-os.org/doc/windows-debugging/
> >> > But windbg waits and the debugee hangs in a similar manner.
> >> >
> >> > What versions of WIndows and Xen are you using?
> >> >
> >> > On Tue, Jun 22, 2021 at 12:10 PM Tamas K Lengyel <
> tamas.k.lengyel@gmail.com> wrote:
> >> >>
> >> >> I have managed to get windbg working with a serial bridge between two
> >> >> Win10 VMs using the following script:
> >> >>
> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/serial-bridge.sh
> .
> >> >> The debugee has to enable a couple options so that windbg can attach:
> >> >>
> https://github.com/intel/kernel-fuzzer-for-xen-project/blob/master/scripts/debug.cmd
> .
> >> >>
> >> >> Tamas
> >> >>
> >> >> On Tue, Jun 22, 2021 at 12:01 PM Neil Sikka <neilsikka@gmail.com>
> wrote:
> >> >> >
> >> >> > Hello,
> >> >> > Has anyone gotten a Windows10 (Version 1709 of later) kernel
> debugger attached when running the Windows10 debugger VM and the Windows10
> debugee VM on Xen 4.13.0 hypervisor? I am getting a "NIC hardware
> initialization failed" error. I tried the suggestions in the discussion
> here (https://bugzilla.redhat.com/show_bug.cgi?id=1947015):
> >> >> > -cpu
> Skylake-Server-IBRS,ss=on,vmx=on,hypervisor=on,tsc-adjust=on,clflushopt=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaves=on,ibpb=on,amd-ssbd=on,
> \
> >> >> >
> skip-l1dfl-vmentry=on,mpx=off,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KVMKVMKVM
> >> >> >
> >> >> > note: i had to remove the following 2 arguments due to errors from
> QEMU:
> >> >> > pschange-mc-no=on
> >> >> > hv_vpindex
> >> >> >
> >> >> > Here was the error:
> >> >> > C:\Users\user\Desktop\oldDebuggers\x64>kdnet.exe
> >> >> >
> >> >> > Network debugging is supported on the following NICs:
> >> >> > busparams=0.4.0, Intel(R) PRO/1000 MT Network Connection, Plugged
> in.
> >> >> > The Microsoft hypervisor running this VM does not support KDNET.
> >> >> > Please upgrade to the hypervisor shipped in Windows 8 or WS2012 or
> later.
> >> >> >
> >> >> > KDNET initialization failed.  Status = 0xC0000182.
> >> >> > NIC hardware initialization failed.
> >> >> >
> >> >> > I am using an Intel e1000 NIC emulated through QEMU because its
> supposedly a supported NIC for Windows kernel NET debugging.
> >> >> >
> >> >> > Thanks in Advance!
> >> >> >
> >> >> > --
> >> >> > My Blog: http://www.neilscomputerblog.blogspot.com/
> >> >> > Twitter: @neilsikka
> >> >
> >> >
> >> >
> >> > --
> >> > My Blog: http://www.neilscomputerblog.blogspot.com/
> >> > Twitter: @neilsikka
> >
> >
> >
> > --
> > My Blog: http://www.neilscomputerblog.blogspot.com/
> > Twitter: @neilsikka
>


-- 
My Blog: http://www.neilscomputerblog.blogspot.com/
Twitter: @neilsikka

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