High Sierra macOS freezing and stops

Same difficulties With a MacPro, 8cores, 10.13.1. suggest : reset PRAM (It Helped somewhat) and disable screen dimmer or anything which blackens the monitor . Helped A lot.

Tried many ways to solve this but still freezing. So I reverted to macOS sierra 10.12.6, everything goes well again.

I did a completely fresh install on my 27" iMac with High Sierra and updated to 10.13.1.

That fixed it for me. Using it for one week now without any freeze.

When rollbacked to 10.12.6, no bugs anymore.

This is what worked. My comment went to the wrong spot! Installing the NVidia driver worked for me.

It's possible that your drive is re-indexing Spotlight and causing the slow down. Look in Activity Monitor and see if you see any mdworker processes running. Mdworker is a Spotlight process.

with 10.13.5 it's fix.

I ended up low level formatting and reinstalling EVERYTHING from scratch ... Apple hosed something in the upgrade process ... after 4 months of waiting, I took matters into my own hands

I've had the same issues. The only quick work-around I've discovered is to trigger the Force-Quit window using your keyboard (option-command-esc) which seems to immediately unfreeze the apps. There's no need to actually force quit any of your open apps - the mere act of triggering the Force-Quit window to open seems to do the trick. When you do it dozens of times through the day, it becomes very tedious, but at least it's not as drastic as hard re-boots, etc. Have to hope/believe there's a fix in the works.

Don’t clean install. I did it on my MacBook Pro and it didn’t work. It was ok for maybe a day. But since then, freezing multiple times a day. Definitely a peripheral thing. If I see things starting to freeze or stutter, I unplug my monitor and all is well. We just have to wait for more of us to have this issue in order to get any attention from Apple.

Ok so I did the update yesterday to 10.13.1. Everything has been working pretty well but it was just my MBP 15" running by itself and nothing connected. I moved to my office just now where I have 2 external monitors. One is an HDMI monitor and the other is a DVI connected to a Thunderbolt-to-DVI adapter. I plugged in both monitors and the computer locked up on me. I couldn't do anything and my CPU fans were blazing away. So I unplugged the Thunderbolt connection and all of a sudden my system started working perfectly. Hope they fix that soon. I need my command center back!

The 'High Sierra Freeze' issue appears 2-3 times daily for me on my 15" MacBook Pro 11,3. I am connected to two 27" external monitors via Thunderbolt. A coworker experiences the same issue while her 13" MacBook is connected to an external monitor. The freeze doesn't seem to be App specific and is a real productivity killer!

TEMPORARY FIX:

During the freeze, I disconnect the Thunderbolt cables and open the MacBook. The resulting graphics screen refresh seems to cure it and I reattach the monitors. The fix only lasts for a while, then I have to repeat the process. Graphics/graphics card issue? Time will tell.

What type of account(s)? (POP, IMAP, Exchange)

What Email Provider? Comcast, Earthlink, Cox, ATT, Yahoo, iCloud, Gmail, AOL, Hotmail (other)

If IMAP, I would remove the account in Mail, this will take you to System Preferences > Internet Accounts. Remove don't just uncheck.

Verify in Mail that the account was actually removed. Then add back one account at a time to make sure it's working properly. see this link for help on verifying: Re: Mail downloading constantly

For Safari, try this....

Quit Safari

In your User's Library, go to Safari folder. Rename SafariXXX

Open Safari. It will not have any bookmarks or history.

Does it crash in this clean state?

If yes, we can get your history and bookmarks out of the old SafariXXX folder.

"> hard freezes with no recovery, sometimes the sound on a video or from iTunes would continue playing in the background. These symptoms seem to happen only on iMacs and MacBook Pros, across multiple configurations and year models, including all video cards, SSD/HDs and RAM configs, and in all Web browsers.<"

Many of us are also experiencing these exact symptoms on our Mac Pros so I have to believe it's wide spread. The freezes range from 10 seconds to 50 or 60 seconds although audio goes on as normal. A change in video card drivers helped but not completely. I have 32 GB of memory and a combination of SSD's and HD's with the 13.1 APFS file system on the SSD.

IMO Apple Mail bugs are causing a big part of this problem. When I leave it turned off and viewing mail in ICloud using Safari the freezes are few and far between. This morning I've had zero freezes with Apple Mail shut off..

I also use Parallels with Windows 10 and 13.1 and it seems to be working quite nicely although I've lost my audio from Parallels so I will troubleshoot that this weekend.

Hi everbody,

after downgrading my MacBook Air to Sierra, alls problems have disepeared !!! I juste have some troubles to get my iMessages back but everything seems to be all right.

I'm very disappointed with this issue. It take so many times to downgrade... And I think to people who has not enough times or knowledges to do this. And when I call AppleCare Support, they try to tell me that it wasn't a software problem but an hardware problem ! I'll call them back next week !!!

Good luck to everybody !