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Your system has been upgraded in place for many years.

You have many many system extensions and daemons that are very old and could be failing and causing all sorts of conflicts.

There is stuff from Parallels version 7 (the current one is what... 19?) that was moved to /Users/Shared/... because it is incompatible, but there is more. This one is not running, so you can at least delete it and recover some space.

But, really, what this system needs is to backup, erase all content and settings, and then migrate ONLY the user accounts. Get rid of all the cruft and start Sonoma with a clean system. It takes much less time than it used to: it is no longer necessary to actually reinstall the system (it is mounted read-only in a sealed volume, anyway).

Start your Mac in Safe Mode. Do these pop-ups still appear in Safe Mode?

No? Please run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.

I ended up just erasing the Mac and re-installing MacOS. Pretty sure there was an issue with the external drive (kept saying “Failed to open” whenever I tried to erase or sync the drive) which caused an issue with Time Machine after the Sonoma update. Thanks again for all the help narrowing down the issue

Connecting an external hard drive to Time Machine and running a backup resolved this error for me. I even disconnected the backup disk from Time Machine and rebooted, still no errors. Hopefully this helpful to others.

Try what I recommend above, connect a hard drive to Time Machine and run a back up. See if this helps. Also, for me, the error dialog was reproducible when navigating to the Time Machine settings, which was a clue.

The first thing that stands out: your system drive is FULL. You have some 40GB free out of 1TB, that is about 4%. Now this may not be causing the issue at hand, but it may well lead to crashes and potentially data loss if you let the free space dwindle. Strive to have 15-20% free on any system drive, and at least 10% on other drives.

Narrow it down with a screen shot of the pop up with this file:///... information on it and then post it back here using this editors image insertion tool on its toolbar.

RH.1970 wrote:

It's all the time, constantly from startup, I'm not doing anything specifically, hence the frustration unfortunately. It would be easier if I could narrow it down

Safari>Settings>Websites>Notifications Deny notifications

Safari>Settings>Websites>Pop-up Windows Block and all popups if neccessary

Is the Drive formatted properly? Is it maxed out (out of available storage)?

RH.1970 wrote:

Since installing Sonoma I get this message in a popup constantly and I have no idea how to stop it. My Mac is almost unusable because of the constant interruptions with it.

Any advice on how to stop this would be greatly appreciated.

3.6 GHz 8-Core Intel Core i9 running Sonoma 14.0

What exactly are you tying to do, and where?

My parents' computer is having the same issue since updating to MacOS Sonoma (14.0). 2022 24" iMac M1. Makes the computer EXTREMELY frustrating to use, if not unusable altogether at times.

Things I have tried (that haven't worked):

1. Unplug external hard-drive and uninstall the 3rd party backup software
2. Remove all "Open at Login" and disable all "Allow in Background" Login Items from System Preferences -> General -> Login Items (and restarted)
3. Uninstall all non-Apple Applications
4. Change Wallpaper to Sonoma Dynamic Wallpaper (the used to have it cycle through their photos)

After a restart (with theoretically absolutely nothing running except Finder), I still get spammed with 5 or 6 pop-ups at startup and a new one every minute or so after that.

Is there at least some way to try to narrow down where the popups are coming from? I can't find anything about which Application/process is triggering them or exactly which "URL" it is trying to connect to...

I'm having the same issue, did everything mentioned in the list above. Tested in safe mode and can confirm the same results. Spammed with this error dialog at start up with 1 or 2 popping up every 15 minutes or so. I've added my etrecheck results. Any help is appreciated.

So I partitioned an external hard-drive to do the Time Machine backup and restore, as you suggested. I ran my first backup and the problem was resolved. I even disconnected the backup disk from Time Machine and rebooted, still no errors. However, to your overall point, I still plan to do a serious clean up of this device now. Hopefully this helpful to others.

When I double click to open Time Machine nothing happens. No error, no window, nothing (other than this stupid pop-up every 5 seconds). When I try to "Add Backup Disk" in System Preferences -> Time Machine I see the drive, but get the error "Couldn't open disk" when I try to set it up with Time Machine. Seems like an issue with Time Machine? Also, the external drive is a LaCie Mobile Drive 2022.