macos catalina keeps restarting my computer

@dbgfede No, never used any CleanMyMac. It happened also with a fresh, re-installed OS. I removed now all LaunchAgents/LaunchDemons (system and user-wide), no software running, and it still happened just now.

@dbgfede MacBook Pro (MacBookPro9,2, 13-inch, Mid 2012), 2.9 GHz Dual-Core Intel Core i7, with 8 GB 1600 MHz DDR3. Boot ROM Version 231.0.0.0.0. SMC Version 2.2f44. All worked fine with all previous versions of OS X.

And I don't think that suddenly a hardware error appeared.

Judging from this thread, there seems to be a huge variety of models involved.

@xtoph-pha; completely agree with you; must be software; even myself I have experienced quite few "panic messages" on MacBook 16' with different configurations, furthermore I have read hundred of comments (to include YouTube reviews, since Dec 19) in relation to "your computer restarted ..."; the notorious message appears after "sleep", this seems common for all, different machines/different configurations, different applications. Difficult to find the line which connects all of us, but my sense is that we are all "victim" of Catalina 10.15.4. Apple is working on the new release, it should come soon; they will get it fixed. I can guarantee that the reset of SMC, ..VRAM ..is just waste of time. I hope it helps.

Will try safe mode tonight. I'm also going to follow @dbgfede suggestion about the energy saver and see if that helps. I have apple care, so apple may (or may not) help, but I use my computer every day and really can't deal with the week(s) it will take for them to repair it or send me a new one.

I haven't installed cleanmymac x, This is a brand new laptop though. So I cant imagine there's faults, but based on the replies on here, it seems to be a software issue. I hope apple realises this and updates asap.

I tried the suggestion by @dbgfede last night where I turned off enable power nap and my computer did NOT restart last night. So while I'm cautiously optimistic, I'm also pretty sure everyone on this forum knows that one night doesn't mean much. I'll update after a few more nights with power nap off.

Unfortunately the power nap was already disabled on both my battery/power adapter settings. Yeah my MacBook Pro 2017 keeps restarting, or wanting to log out in order to restart if I walk away for the computer for 15-30 min.

Found this on another thread. I think this is it since I used a timer to see when the computer would shut down and it was exactly at 15 min so:

"Here's the fix, and Apple needs to fix this on their side too!

Go to System Preferences | Security & Privacy | Click on "Advanced" on bottom right (unlock padlock first) | Uncheck "Logout after 15 minutes of inactivity"

This was the fix, i no longer have the rebooting happening thankfully. I've had this Macbook Pro for 6 years, never knew that this option even existed in all these years! It somehow got enabled with 10.15.4 upgrade?!"

Same issue here with a mac pro 2019. I've recently rebuild my computer from scratch reinstalling all my software. I can't find out the reason why my mac keeps starting up on its own almost each time I shut down.

Same here. My imac is 2019 and when it goes to sleep at times it doesn't wake and also it randomly restarts if left alone for a few hours (overnight).

I've performed a clean install and still the same things are happening.

It's so annoying.

Same problem on Mac Book Air 2015. I only use Google Chrome and Zoom. No hard drives, printers or any other devices. It restarted four times today for no reason. So upsetting and ruining my whole work day.

10.15.5 and still the sam problem.

I have noticed a few things though.

The restart only happen whe doing something in iMovie, like, exporting a movie.

I updated iMovie to latest but no luck.

However, if I do other works, like browsing internet, during the movie is exporting, there is no restart.

This is not a parmanent solution, but seems like it wants me to keep doing something continuously. If I leave it idle, BAM!

I have also experienced the problem of misterious rebooting for 3-4 days after waking up the machine (iMac 2015). Never before. First time I thought it had some connection with the bluetooth tools (keyboard & trackpad). Both were at 0%, so I just put them on wire to charge, and after reboot everything was fine. Now, today, neither tools was at 0% (94% and 35%), though after the multilanguage screen of reboot, the bluetooth switched off itself, and I tried to connect both keyboard and trackpad in vain, the machine seemed freezing. So I held the switch on/off button to shut down. Then after restarting, now it is fine again. So I believe this problem (in my case at least) has something to do with the bluetooth tools.

After months of my iMac restarting itself automatically after shut down, and me needing to either force shut down with start button or restart in safe mode after a very long wait then shut down, the issue appears to be resolved. I installed Catalina update 10.15.6 and can now shut down without any issues.

Same problem here. It just restart every day. Even in the sleep mode it restart by himself. macOS Catalina, iMac Late 2014 with 16 GB DDR3 Ram.