MacOS Catalina crashes at shutdown

As you tried all the usual fixes and took out login items as I would have suggested then the only things left are

• Hardware problem (less likely but cannot be ignored)
• background runnning app which you may have restored along with the OS and of course I am talking third part Antivirus, Security, cleaner and booster apps. All are death to MAcs.
• 
  

If you reinstall Catalina *clean* as if you were going to sell the Mac, if it still crashes then consider the first possibility.

Hey guys, Apple are not ignoring you as Apple are not here, but making spamming threats will not bring out the expert volunteers either.

And the usual fixes for those who didn't follow the community specialist are

Do all three of these things

NVRAM reset

https://support.apple.com/en-us/HT204063

SMC reset

https://support.apple.com/en-us/HT201295

Safe Boot

https://support.apple.com/en-us/HT201262#issue

then restart as normal

CleanMyMac is considered by most here to be akin to malware. Uninstall it according to the developer's instructions. There is no need to use any "cleaning", "optimizing", "speed-up" or anti-virus apps on a Mac.

If you want to know how to protect your Mac read this user tip: Effective defenses against malware and other threats - Apple Community

Also, as Peter has already suggested boot into Safe Mode. The clears out caches, system and swap files and repairs the disk during boot.

Hey SteadyDisorder,

I understand when shutting down your MacBook Pro, it crashes and then restarts again with a crash log. I'll be happy to help out.

It sounds like you've followed most of the steps from here: If your Mac spontaneously restarts or displays a message that it restarted or shut down because of a problem - Apple Support. Have you also followed the steps to determine if this is a hardware issue? If not, try those steps now.

If you're still unable to resolve this, Contact Apple Support directly for a further look into this.

Take care. 

Did you get any help with this?? So many people are having this problem and only on Catalina. Never before. It's obviously a software issue, how hard is it for a bloody computer to shutdown when you tell it too. Computers have been doing it for years successfully before now.

Just going to keep spamming this until someone at apple figures out how to shutdown a computer when a user clicks "shutdown".

I mean, it's not as though computers have never been able to shutdown properly before......................................

I suspect this is related to certain command-line tools and/or utilities.

Among other things, I do open-source development on my machine (Ruby, NodeJS, PostgreSQL), and after using these tools in Terminal, my Mac Pro reliably crashes on shutdown.

However, during login sessions when I don't use any command-line tools, but use macOS apps like Logic Pro or Final Cut Pro instead, the computer does not crash on shutdown.

Yes I have tried all the items you have suggested but it's really a mute point isn't it. I haven't added anything or changed anything substantially to my iMac since Mojave and this problem didn't exist then so it has to be a bug with Catalina doesn't it?

That being the case then it's an apple issue, and hence should be something apple needs to address.

I do not believe telling affected users they have to clean install the OS and virtually "start again" as being an acceptable solution.

Do you not agree?

If you mean junk third party A/V and cleaner apps then presumably because they were not updated and tested properly by the developers. In the case of A/V they can set up a deadly embrace with built-in Apple safeguards.

Anything on my Mac has come from the apple App Store. No idea what A/V is sorry.

As you can see by the number or threads on this issue and by the growing number of people saying they have the same issue (even with brand spanking new machines), how can anyone argue it's not an apple issue?

Does apple themselves not monitor these threads at all?

Same issue here. Didn't have it until MacOS Catalina. Running a 15" Macbook Pro w/Retina Mid-2014. On occasion it will shutdown without issue, however, 80-90% of the time when I try to shutdown it crashes and automatically reboots. Instead of logging in after that reboot I am able to successfully shutdown from the log in page.

Mr No Idea 247, Apple are not here, you are shouting into empty space.

A/V for your information is antivirus, like Norton or Avast. We on the forum see a lot of problems after reading Etrecheck reports that were fixed by uninstalling A/V or Mac Cleaner apps that run in the background. It is not an obvious bug if you install snake oil apps that create a deadly embrace with Mac's inbuilt protection. Had you been the original poster I might have suggested attaching an Etrecheck report.

Just because apps are on App Store does not mean they will not cause problems. I have paid for apps recently that were 32bit apps that wrongly claimed to be suitable for my Mac. Fortunately App Store purchases are relatively easy to obtain a refund for in such cases, which is one of the protections of the App Store.