MacBook Pro 2016 touch bar randomly crashes

So I have this issue too, but mine crashes when asleep, in my bag, with nothing plugged into it. Its pretty manageable, I just make sure everything is saved and closed before I put it away, but its still annoying. Hesitant about doing a clean install, but might have to one day.

My 2016 15" MacBook Pro is on OS 10.12.4 and crashed with the following message:

*** MCA Error Report ***

CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i7-6920HQ CPU @ 2.90GHz, CPUID: 0x506E3)

CATERR detected! No MCA data found.

This happened while in the middle of an initial backup to an external HDD (LaCie, Porsche design). The drive is network attached, and the MBP was connected to the network via a third-party USB-C/Ethernet adapter. As I mentioned, the computer was in the middle of a first backup when someone closed it. The crash happened when I re-opened it.

This is actually my second (replacement) MBP. The first one had similar very frequent crashes although with very different error messages. The replacement computer worked perfectly fine for about 4 weeks until crashing.

I believe now that it has something to do with using the LaCie HDD and adapters. I don't think there is a point in exchanging this laptop too - the problem will just keep happening.

After I'm done with the initial backup, I'll switch to automatic backups over wifi. Hopefully with adapters & cables eliminated from the picture, the problem will go away.

It is not your adapter's fault, it is new MBP's fault.

Everybody trying to blame external devices, adapters, screens...when the real problem are the computers.

I am so impressed on how good Apple's marketing is...we prefer thinking is our fault rather than their fault.

It is an Apple computer, it just has to work.

I am working on a 2012 MPB retina until the new MBP is released...then I will decide what to do.

Don't get me wrong: I also think that there is a design flaw with the new generation of MBPs that so far Apple has been unable to fix or even make people aware of. At the same time, it seems that to trigger the problem, one has to be using a third party HDD or certain combinations of HDDs/adapters. For example, many people mentioned Porsche Designed LaCie HDDs.

I certainly would not recommend buying a new MBP until Apple sorts this out, or at least tells us for sure what external devices one has to avoid.

Same thing happened to me today. I'm running a Keynote presentation and plugged into a professional 4K video system via HDMI. The computer wasn't running the presentation and crashed while idle.

It gave me the following crash report header:

*** MCA Error Report ***

CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i7-6920HQ CPU @ 2.90GHz, CPUID: 0x506E3)

CATERR detected! No MCA data found.

I experienced similar issue

*** MCA Error Report ***

CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i7-6567U CPU @ 3.30GHz, CPUID: 0x406E3)

CATERR detected! No MCA data found.

when 13-inch 2016 touch bar Macbook Pro woke up from led closed

I have filed a bug with Apple and given them my logs. They said 10.12.6 would fix it (at least engineering speculated there was something in there that might do it). Unfortunately, the issue is back.

Note, I didn't have this until 10.12.5 timeframe from what I can gather. 10.12.2-4 seem to work fine.

I have exactly the same Problem! My MBP 2016 crashes when i copy a 6GB File like a .mkv to a USB Stick (with a wonderful Apple USB-C Adapter...) This Problem is any time, with any Stick, but only with this Device.

Same thing here. I just got a new external hard drive today, and I've had 5 crashes trying to back up to it using SuperDuper; it's happened every time I've tried. Copying files with the finder is no problem; all crashes have been while using SuperDuper.

I'm a bit confused. For folks backing up using a USB drive, are you seeing the MCA error panic on boot up when the machine crashes?

I'm told by Apple that suspending the system while having a USB drive attached may be the root of the problem but they are not sure yet (and neither am I).

You will get a pop up saying your machine shutdown unexpectedly and ask if you want to look at the system report. If you click on the system report, you will see the panic stack trace and the "MCA error" message as described by the original poster.

If you are not seeing any of this, you most likely don't have this problem.

Yes. I do get that.

When the computer crashes, the first thing that happens is that I get one those error messages you get when you disconnect an external hard drive without ejecting it first; then everything freezes, and after about 20 seconds the computer restarts.

But on restart, do you see the MCA error message?

Your problem sounds like a driver issue with that USB drive. For example, go use a USB stick or some other USB mass storage device and see if it still happens.

In my case, it has to do with suspend. I never see crashes when I am copying data to my Glyph drive (I do that all day long too).

I do get the "your computer shut down unexpectedly" message on boot up.

Strange though, that it only happens when I use SuperDuper to back up. I've used SuperDuper with many other external hard drives with no problems.

Just happened for the first time for me - 2016 MBP 15inch Touchbar with 2 USB-C external drives, a Thunderbolt Display attached via a Thunderbolt 3 to Thunderbolt 2 adapter and a HooToo USB-C hub (with nothing attached to it). Lid was closed, computer should have been asleep, happened mid day while I was at the office. Running macOS 10.12.6.

Mon Aug 28 13:19:53 2017

*** MCA Error Report ***

CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz, CPUID: 0x506E3)

CATERR detected! No MCA data found.