Overheating MacBook Pro after Big Sur instal

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!

Depends on what progarm you use to do your backups. I use Super Duper which clones the HD making an exact copy. Therefore, to restore, I just need to erase HD then copy back from backup. It takes a while but I revert to the exact state as when I did the backup. In fact, I usually keep previous OS backups for weeks following upgrade in case. True, I lose everything created since the backup but I return to a state where I can use the system. Hope this helps.

Same thing happened to me. MacBook Pro 2018 regularly got too hot to keep comfortably on lap after Big Sur Upgrade. Then.....my MBP bricked completely. Genius Bar says I have to send in for $575 repair fee. I think Apple owes me a free repair. I upgraded per their suggestion and my computer died due to known power mismanagement issues.

I have the exact same problem and am so exasperated. Despite the cpu % being under 20% and having the Big Sur update reinstalled at a Genius Bar, my computer continues to get hot with the loud fan on constantly even when just browsing the internet. It is especially frustrating because I never had this issue before the last OS update to Big Sur. I am upset with Apple and reconsidering their products entirely.

MY MacBook Pro (15-inch, 2018), is doing the same. right after install Big Sur, the fan is always working hard even doing nothing. can someone help? regards

Do you have Google Chrome installed?

As was suggested by another, I restarted a couple of times, and that cleared away the heat, constant fan, and heavy battery drain -- at least so far.

Wait at least for 1 year before you do upgrade to big sur. Downgrade to Catalina, it is the most stable macOS.

I had the same problem I restarted then all good

After upgrading to MacOS Big Sur, signout and then signin to icloud account :)

leave your feedback so others can benefits!

I have the same issue. My MacBook Pro is 13-inch model A1989 and ever since the update, it heats up just by watching YouTube or sometimes even when no program is running its heating up with the fan noise.

So, pretty much as I advised yesterday. This is known behavior, especially after a major upgrade, that users should be aware of prior to undertaking the installation.

We all need to do our homework so that we know what to expect. After being burned more than once on upgrades I no longer jump right in. Rather, if there are issues that I don't want to take a chance on, I'll wait for a 'dot' update.

I didn't even upgrade from OS 9 to OS X until 10.3 (Jaguar) because printing wasn't sorted until then.

Sorry for the rant but when these types of issues are reported it makes it seem as if the entire OS is no good.

The most serious issue thus far seems to be 'bricking' of early laptops and I'm really sorry for those folks but you need to approach these things cautiously.

MacBook (Retina, 12-inch, 2017) , same problem after installing Big Sur .

only get the device on, make it getting all the macbook case very hot after 5 min with no softwares launched. and the battery drain very quickly too ! D'=

that wasnt happening with Catalina.

I stumbled across the same problem. Updated my MacBook Pro 2020 to Big Sur yesterday and since then my fans have been working like crazy turning on and off without any reason whatsoever. Before the update the fans turned on only while gaming, and were silent even with multiple applications.

The apple store at king of the Prussian updated Mac OS Big Sur on my MacBook Pro 13 today (November 22). Just used for 12 minutes, it pretty warm. I told the technician when I picked up the MacBook Pro, he just said it no problem. Otherwise I can request a cooler test. So I took home and it has the same problem when I use at home.