after updating to Mac OS 10.13 I get this file has been modified outside illustrator. do you want to continue?

We have the fix available in the latest release. Please update Illustrator using Adobe Creative Cloud application to the latest build for version Illustrator CC 22.1.
Please refer to our knowledge base FAQ – https://illustrator.uservoice.com/knowledgebase/articles/1844590 if you face difficulty in update.
Or get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html
Warm Regards,
Ashutosh Chaturvedi | Sr. Quality Engineering Manager – Illustrator
Adobe. Make It an Experience.
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KSDesign commented
Having this error with all locations. On Adobe CC 2018 with Mac OS High Sierra. It also happened on Sierra.
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Philip Byrne commented
Seeing this error with all files in all locations. Happens when a file has been changed and saved multiple times while still open.
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Anonymous commented
"This file has been modified outside Illustrator. Do you want to continue"
i'm recently facing the same issue too. keep received the same pop-out while try to saving each of my files:
"This file has been modified outside Illustrator. Do you want to continue"
I notice this pop-out is appear once my mac OS upgrade to Sierra high.
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Anonymous commented
Using 10.13.2 on Late 2014 iMac. I get this message every single time I save a document.
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Murphy Fogelnest commented
I'm on an iMac Mid-2011 with most current Mac OS High Sierra. I am also receiving this message —“file has been modified outside illustrator. Do you want to continue?” Please advise why this is happening. I‘m also getting a message that tells me “to rename my file.” Any fixes?
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SirLogray commented
Save As... over the same file -> problem is gone.
Thx Tim -
Arlen Parker commented
"This file has been modified outside Illustrator. Do you want to continue?"
Having same problem and really kills my work time.
Started when updated to macOS 10.13.2 and Illustrator 20.0.1 on same day. Using a MacPro with files on a external hard drive, NOT using file within DropBox, NO Time Machine, NO Cloud service, NO Auto Save. Can open new file and use for a while but as shown as I paste any element from another ai or eps file on the same hard drive, start getting message every time I save. PLEASE, PLEASE HELP!!! Driving me crazy and eating up time. -
Christian commented
I have been having this issue since the 10.13.2 update and been driving me nuts. I think I have narrowed it down to Time Machine. For some reason, the backup drive doesn't always show up on my desktop so nothing gets backed up, I have to manually switch off and on the external hard drive for it be recognized and start backups. I shut down my computer every day, so I have to do this everyday. I don't always remember and just noticed that when the drive isn't recognized and not backing up, I don't get the error of "this file has been modified outside illustrator". I work directly from my hard drive on my iMac, not an external, not on the network and not a dropbox type folder. Hopefully that helps, or just adds to the confusion lol
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Hi All,
We have tried to reproduce this issue inhouse and are not able to reproduce it. We are testing on 10.13.2 which is upgraded from 10.12.6. We have tired saving to dropbox, netwrok and local system.
Can you please share the following infortmation:
1. Are you using 10.13.2? If it is 10.13 or 10.13.1, then can you please verify after upgrading to 10.13.2 and see if the issue is still there?
2. Is the problem happening for particular size of files or with any file?
3. Does the problem go away if you delete the preferences of Illustrator?Thanks
Anish Kumar
Illustrator QE Team -
Danny Phan commented
Same error... could this be due to auto saving/backing up to an external HD?
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Chris commented
having the same issue and yes I'm using Dropbox which up until recently worked perfectly and did not produce this message
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Anonymous commented
Thanks Tim, The "save as" over itself seems to do the trick
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tim commented
Having the same message and found it went away when the offending file was "save as" saved over itself.
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Susan rand commented
I too am having this problem. Just glad I'm not alone at this point, but after using Illustrator all day for multiple deadlines, I'm extremely frustrated having closed that f'ing box over a hundred times.
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Alex commented
I am getting this pop-up. I am saving to a DropBox folder on an external HD.
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Philip commented
I have just done a test. Im using Illustrator 22.0.1 on an iMac 10.13.2 and have the same warning message. I thought this was a conflict with DropBox, but even after quitting DropBox, I still get the warning. Its a software conflict problem somewhere. I think it needs someone smart than me to come up with the answer.
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Anonymous commented
i also get the same error every time while i trying to save my file during progress. It happened once I update High sierra in my iMac.
Adobe Illustrator CS6 version 16.0.0
macOS High Sierra
Ver. 10.13.2 -
Anonymous commented
I'm getting the same error and I am saving to the computer
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TW commented
I get the same error message when saving an AI file:
"This file has been modified outside Illustrator. Do you want to continue?"I'm not saving to Dropbox or any other network device.
Illustrator version 22.0.1
macOS 10.13.1
13" MacBook Pro model identifier 8,1 -
Randy Devost commented
I am having this same issue and I am not saving this file to dropbox. However my work-in-progress files are in a folder that is sync'd to my Google Drive (Google Backup). I am running the latest version of AI and running on High Sierra. I also use the latest version of Suitcase for font management.
I'm working on a large project in Adobe Illustrator and am worried that something is going to happen to the file I'm working on.