The people at Adobe have known about this for years, and hey they just dont give a ****. I have been clicking thru that warning for years

I'm using CS6 with High Sierra and Dropbox. All files result in this alert when saving. How is updating the software a fix??? Please tell us why it is happening.

"Completed"
The whole point of this subscription model is that you'll be able to fix things more efficiently. Hard fail.

Im Running Mac OS 10.13.5 and Illustrator 21.1.0 - This problems seems to happen when I save the file to an iCloud folder on my hard drive, as soon as I re saved the same file to another folder that is not related to iCloud the problem went away.

I have the latest version, updated recently again also to ensure this, and it keeps coming up

I have the newest version of Illustrator, and I'm still getting this error message when saving to my network server.

I am getting this message while running 10.11.6, El Capitan OS.

I have updated to latest version and still getting this message.

The BETA does not resolve the issue of the message "This file has been modified outside of Illustrator". I just installed it and the problem showed up immediately. This is truly annoying. If it is related to the latest Mac OS update, then it would be good to know that for sure. So far, Apple seems to think it is an Adobe problem. It only shows up in Illustrator, at least in my experience so far.

The fix works for me, thx heaps it was driving me nuts!

I don't think this is an Adobe problem; I get the message saving a file in TextWrangler to my HD even immediately after creating a new file. It must be some problem with the Mac OS 10.13.3 update...

Same problem.. saving to HD. Driving me crazy....

I'm also having this issue and am not working on a network or saving it to the cloud, online drives, or a removable drive. I'm just saving it to my machine's hard drive. I would say it happens 90% of the time when I use Illustrator.

I'm having the same issue.
Not saving to Dropbox, just on to my hard drive.
Doesn't happen on every save of the same file. Seems pretty random.

Same issue here, I'm just saving to a drive. Every time I copy and paste (and yes I embed the file) items I get this error. It drives me nuts.

This happens to me and I'm not using Dropbox, but I am using Google Drive desktop app for Mac.

I'm saving to a Dropbox folder and getting the same message even now, February of 2018.

I am having the same issue but intermittently, i.e. on some files only.

I seem to get this notice all the time! I'm not using dropbox or anything else.
I'm opening a file that i used a couple of months ago, do something to it and every time I go to save, I get this notice.

I have even gotten the message on new files I create.
Everything is done on my desktop — nothing is shared.
It is very annoying!!!

Same problem all the time. I can work new file and save a few time, but if I copy, paste or import anything... from local drive, even from same folder, then the message comes up every time I save. MacOS 10.13.3, Illustrator 22.0.1 I do NOT use iCloud back up. All files are on an external pro Lacie drive.
PLEASE HELP! This is annoying and killing time when your using Illustrator all day.