After updating to Safari Version 17.5 (17618.2.12.111.5, 17618) it sometimes crashes

Start with this...

Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes or more.

Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.

To find out if it's system wide or user specific, try this...

Open System Preferences>Users & Groups, unlock the lock, click on the little plus icon, make a new admin account, log out & into the new account.

Does it work in the new account?

Having similar problems on my iMac running same 12.7.5 OS Monterey. Since update to Safari 17.5 (17618.2.12.111.5), I've not had problems with crashes, but many times loading of frequently-visited websites is extremely prolonged, up to 1 minute or more. (Other times it seems Safari remembers the website has been visited and loads in a flash!??). I've done speed testing for our ISP (Cox) and up/down speeds ~940MBPS each, so input is good. My wife has identical problems on her iMac, iPhones and iPad. She's headed to the Apple Store today to have them check it out. (Her iMac is running OS Sonoma 14.5, Safari 17.5 (19618.2.12.11.6)).

jvspringrose wrote:

Thank you! I didn't think it was going to work, but it seems to have cleared up the problem! Things load like lightning now - hope it lasts!

You're welcome. Keep us posted as to how it goes.

Sometimes temp cache files get damaged or corrupted and cause strange performance issues. That's why the Safe Mode boot often fixes these problems. As Forrest Gump said: "It happens". Nothing is perfect although we'd like to think so.

Booting in safe mode, clearing caches, deleting cookies. Tried absolutely everything - nothing works. It's an issue with the latest security patch itself and Apple needs to address it with a fix/update.

Same experience on *two* Macs (MB Pro, 2016; iMac 2015): After system update to Monterey 12.7.5 + Safari 17.5, safari crashes. Sometimes after a few minutes use. Sometimes almost immediately after restart (of Safari or of the entire system).

Fingers crossed that Apple gets wind of this and releases anew QUICKLY !

[ A lot of my professional work ( and logins, etc.) are heavily Safari-dependent. It’s been a great ride for _decades_ . In the last few hours: not so much. ]

I'm having exactly the same issues in the current (June 2024) Safari Tech Preview (Safari 17.4, WebKit 19619.1.16.3) - super unstable, and seemingly tied to either ALT-W or the red X dot to close a tab/window. Really super irritating! I even did a reinstall of Sonoma to see if that'd help.

I wonder if the problem is in the browser or if remapping keys triggers a crash. Will reset the key mapping and try it again.

Macbook Pro mid 2015 OS 12.7.5 I don't experience crashes but a few websites don't fully load or they just freeze up while trying to scroll or type within them. Safari 17.5 has this problem even with no other apps open. Refreshing page, restarting modem, clearing cache doesn't fix it for me. I end up using Firefox, no problems there but my daily business, bookmarks, etc. is on Safari.

I reloadeded my OS, this fixed the problem. Tried a second time of updating Safari and again the problem of crashing and heating up my laptop. So I reload the OS again and no more problems. I had called support a few times each tech tried something else to no avail. My last call the tech told me to buy a new laptop since mine was 4 years old, not a good reply!

Signal 11, also known as SIGSEGV (signal segmentation violation) is an error signal in Unix systems. The error appears when a program or code tries to access an invalid memory location. The operating system sends the signal 11 error to the program as a response.

Yes, I'm running Safari 17.5 on macOS Sonoma 14.5 and I've just recently started having issues. Closing the tab doesn't work, I have to restart Safari and after an hour, problem starts again. Anyone have a fix or are Apple techs on the case?

(MacBook Pro 16-inch 2019, Intel 8 Core i9, 64GB RAM)

What I'm afraid is that this might be the last update for Monterey and Safari 17... Monterey will soon be 3 years old and will be dropped out of support. Hopefully we can get another update before Sequoia that fixes this issue

Did you try the suggested fixes given to the Author of this thread?

Also you might try the Safari Technology Preview app from the Apple Developer's website?

Hey there, try to clear Safari’s history and cookies.