Overheating MacBook Pro after Big Sur instal

I had the same problem , I have a 2020 Macbook pro , it was running very hot and fan going crazy , with no apps running ? it took 3 days to fix , Delete Chrome ! , re install newest version , this will solve the problem .

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.

2015 Macbook Pro 15 I7 2.5. Updated to OS Big Sur about a week ago. Previous OS was good with few issues. The aforemention APS whatever running in the background did sometimes cause fan and CPU issues and I would just force quit it. With Big Sur I am seeing reduce battery life. Also there are times when the fan just goes bonkers. Activity monitor does not show any unusual CPU usage. I quit everything and the fans stop spinning. Something is messed up with OS Big Sur. Previously very good computer and now having random serious issues.

Trust, I have had the exact same problem - my Mac, which is a Mac Book Pro 13", has been non stop overheating since I've gotten this update. Weird. I don't understand why - & it is a 2017 model so not even that old??!! Please, if anyone has a resolution to this massive 1st world problem that would be amazing, because I can't even watch 10 minutes into my Queens Gambit series without my laptop sounding like an aeroplane is taking off...

May I also add that I do love the update, besides the hoover noise (thats just incase Apple is reading this but keep that to one's self).

I suggest looking at your activity monitor (see my post above) as Big Sur seems to have trouble communicating with background task that might already have been running, causing an energy-sapping loop that you will need to force quit before things noramilse. If that doesn’t work, it is indeed a compatibility problem, but try this first - it’s not very difficult.

Yes as stated I repeatedly checked activity monitor and never saw any concerning CPU utilization but fans were blasting away. Just saw something interesting. Have noticed been noticing a message "increase display contrast on". This is new since Big Sur. Evidently under accessibility there is a display option. The "increase contrast button" is not checked. The slider for "display contrast" is dialed up one notch. Think this happened during the software upgrade. I have now set this back to normal. Will see if I have anymore issues.

This is perfectly normal after a new MacOS update. There are numerous system tasks running in the background, preparing MacOS for normal use. It could take a while - even hours, particularly if you're using your Mac at the same time.

Run Activity Monitor and watch what processes are running if you so wish to see what's going on.

SAME !!! SAME!!! also connect external MONITOR burn it totally :-) Already called to APPLE support, but engineers told me that is NORMAL! THAT IS ABSOLUTELY NORMAL TO HEAT GPU and CPU so much....... terrible....

After instaling new macOS on my MacBook Pro it continuously heats up to 75C while doing nothing. I resterted my mac couple times with no effect, and i checked if there is no any app running in background. Is anyone got same problem after that update?

Yeah I've uninstalled chrome and it was ok for couple days then it has been again overheating. I'm keeping an eye on what apps I'm using; it's overheating when using Microsoft office apps too (words, excel, and powerpoint)!! Not so sure which apps are causing that but even when I am just on safari with several tabs it just overheats and the fans start working as if its taking off :]

I had same issue. I tried everything and even went up to senior technicians. I still do not know what was causing the overheating. but if you take the time to time machine backup. erase partition and then option command r to reload a clean version of Big Sur. no upgrades from previous versions. then restore from back up or simply restore desktop, documents, music, etc. then you will have a clean Big Sur install with all your important files. my machine can now have 10 apps open and cpu usage sits at 87%. I have not heard my fan increase since. I have better piece of mind knowing I have clean install of Big Sur and my pertinent files. yes, you will have to download apps so keep track. everything is working great and Apple tech support was very good. Hope this helps... There are no issues with clean Big Sur install.

SOLVED.

Guys, had the exact same problem on my MBA 2019, say, for a week. I read and followed all the previous solutions you wrote down here (many thanks even if they didn't work for my MBA), finally found what I needed: just logged out and in again to my iCloud account, and miraculously both overheating and loud fan noise disappeared. Don't have an update on battery gobbling issue yet, but I assume a better battery performance after getting rid of the fan sound and overheating. CPU works normally, the "secd" process (which was draining it, despite I turned off and on KeyChain several times) is back to normal. I hope it may work for somebody who have been suffering from it!

I agree; there seem to be a lot of issues with communicating devices and especially iCloud each time an OS is updated. The solution is really to keep delving into the system to find what is causing it and restart/sign out to stop the endless loop process and allow it to reset. This is a rather common-sense, logical solution that targets the problem that the Apple help desk really should know about and understand, but never seem clever enough to do!

I have this same issue with my 13 inch MacBook Air after the update of MacOS Big Sur. But not during the idle time, but during multitasking like 5 safari tabs, two VS code workspaces and three terminal windows. I've restarted the mac couple of times, but no use. So, the issue is in the software side. May be fixed in upcoming updates!

I have this problem too its ridiculous. 2018 Macbook Pro 15 inch. Please apple can you do something about this I need this machine to do actual heavy lifting with AE and PR and dont need this heat....