Pop-Up: File was downloaded on an unknown date

I was away for a few weeks, had my iMac M1 shut down. Used my MacBook Air while away & make good use of the icloud for documents. I returned & fired it up this morning & I keep getting a pop-up saying "WebResultsToolDaemon" will damage your computer. Underneath it says "This file was downloaded on an unknown date" & then it gives 2 options "OK" or "Show in Finder". No matter which I pick, it goes away & then re-pops up. And when I select "Show in Finder" nothing happens. So I don't even know which file it is that was downloaded on an unknown date. I have deleted all files in the downloads folder. I have re-started it several times & even unplugged it. Still nothing helps.

iMac 24″, macOS 14.0

Posted on Dec 1, 2023 7:57 AM

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6 replies

Apr 25, 2024 2:40 AM in response to spm81

I'm facing the error "This file was downloaded on an unknown date" with my own file. It's a digitally signed excel file.

It happens after the update to Sonoma on my M1 Mac and only in the iCloud. When I save the file to a local folder, the error disappears. When I copy this local file to the iCloud drive, I can open it exactly one time. The next try to open let pop up the error message again.

John Galt

Level 10

141,210 points

Dec 1, 2023 8:41 AM in response to spm81

Please read About those "<app> will damage your computer" messages - Apple Community.

John Galt

Level 10

141,210 points

Dec 16, 2023 5:30 AM in response to brandie235

Please read About those "<app> will damage your computer" messages - Apple Community.

Jan 2, 2024 1:45 PM in response to John Galt

Pop-Up: File was downloaded on an unknown date

WheelieNick

Level 8

36,897 points

Dec 1, 2023 8:03 AM in response to spm81

It could be that this is malware related. You can download the free version of malwarebytes to scan your Mac for malware

Dec 16, 2023 4:38 AM in response to spm81

Mine just did the same thing a few days ago and I’m not sure on what to do. I use my computer for college and I can’t do anything on it. I can’t even update it now.

Pop-Up: File was downloaded on an unknown date