Overheating MacBook Pro after Big Sur instal

Try deleting chrome , and Re installing , Chrome can use up cpu and heat up the Mac

I had the same problem with my MBP 13, you can try resetting the smc.

I just upgraded to Big Sir 11.2.2 (20D80) and it fixed the overheating!!! So happy.

Reinstalling Chrome didn't help indeed, but resetting my NvRam & Smc solved the entire problem for me. Thank you!

Hi same here about 3 month old 13” MacBook Pro ever since Big Sur its getting really hot. I have gone back to Catalina and it appears to be fine so I again install big sur but it starts occurring again so back to Catalina for me.

its a shame i really like big sur but i dont want my mac cooked!

Hi I had the same trouble with my 2020 MBP 13” i was able to revert to Catalina . Although i had Time Machine backups when i tried on Big Sur they dis not seem to work properly until eventually I effectively was left with a brick. However I guess that when I went into full restore to factory mode it must know the MBP originally shipped with Catalina so thats what it downloaded and installed which I am please with. Even better although it downloaded Catalina from the net , it did restore most of my apps and most of my documents etc which I guess were sitting in the iCloud. I was pleasantly surprised to see everything almost back to how it had been minus a few odds and ends and minus Big Sur. Read up in how to restore your Mac but ensure you have iCloud enabled and synced first. Good Luck.

Well of our 6 MacBooks we have only migrated 2 to Big Sur and we have moved one back to Catalina, the second will follow. The point is that Apple quite obviously has optimized for Apple Silicon and so it is in my opinion not optimal to run Big Sur on Intel Macs.

Sorted mine.

Deleted the EFI Folder in Applications as I use to manage Fiery based printers, but if course not everyone does, so …

I also spent ages using the ETRE Check App to analyse my System and remove the decade(s) of past Apps, Daemons, Launch, Preferences, ktexts … it was a laborious pain but this manual system clean flushed out old, bad? software …

If you have a backup , restore to Catalina and then follow this way

https://support.apple.com/en-us/HT208891

accountsd and secd high CPU usage after upgrade to Big Sur. Also, charging doesn't hold up as like before.

So a quick update for my MBP 16in: After a few restarts my Mac seems to be acting as normal. The OS isn't causing the fans to spin or anything. I've been using it fully for the past couple of days, running apps, creating docs and playing music all at once and it's acting as expected. Perhaps it needed to fully index after the MacOS update? Not sure, but thankfully it's back to normal.

Yep! Thank you so much for posting this. I tried it and my fans instantly turned off and my Macbook Pro is cooling down. Gold star for you!

**Update your Chrome Browser!!!!

I called support all they had me do was reset the SMC. We will see if it works

Yup same here with my 2020 MBP 16 inch. Ever since updating it has been running extremely hot, almost to the point where I was thinking of freezing a towel to put under it to help it cool off. KernelManagerd is running in the background with 50% CPU usage, and I can't turn it off. And no I don't have any sort of anti-virus app to disable like Sophos

I have mbp 13 (late 2019) with i7-2.8. It was never cold even on catalina, but after installing big sur it became even hotter. I have temps around 65-80 celsius when just watching youtube in safari and running telegram messenger.