How To Fix Sorry, this file type is not permitted for security reasons



The new “Sorry, this file type is not permitted for security reasons” message keeps popping up when I try to upload a PDF document even though I’ve selected the “Allow All File Types” option in the “General Preferences” section of my iMac. This happens every time I try to upload a PDF document, although other file types like JPG or PNG work fine.

I’ve tried everything I can think of: Clear all browser cookies and cache. Quit and restart my computer. Change browsers (Google Chrome and Mozilla Firefox both exhibit the same behavior). Download different versions of Adobe Acrobat (the latest version always exhibits the same behavior).

None of it works. The only thing that seems to fix this is to delete the “~/Library/Containers/com.adobe.acrobat/Data/Adobe Acrobat/” folder. After doing that, I can upload PDF documents again. But of course, I don’t know what’s in that folder that’s causing the problem. Does anyone know what might be in that folder that would cause a PDF document to not be allowed to be uploaded? Is there some sort of “rootkit” file or something in that folder that’s causing the problem? This message appears every time I try to upload a PDF document and it’s really starting to piss me off. I’m sure there’s a reasonable explanation for it but I want to know what it is so I can stop getting the stupid message every single time I try to upload a PDF document. UPDATE:

I have now found the answer to my own question! The answer is simple… Adobe Acrobat (at least on my system) automatically creates a backup copy of every file it edits. When you open the PDF document properties dialog box, you will see a checkbox labeled “Overwrite Input File”. By checking this box, Acrobat will automatically create a backup copy of the original file before overwriting the existing file with the edited version. What a pain in the ass. Why does Adobe put up with this sort of garbage programming behavior? I don’t know and I don’t care. If I want to use Adobe Acrobat, I’ll use Adobe Acrobat. If I don’t want to use Adobe Acrobat, I won’t. It’s that simple. Anyway, if anyone else is having this same problem (and it sounds like they are), here’s what you do: 1.



1. Open the PDF document properties dialog box.

2. Click on the Options tab.

3. Click on the “Advanced” button.

4. Scroll down until you see the “Overwrite Input File” checkbox.

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5. Check the box and click OK.

6. Close the PDF document properties dialog box.

7. Open the original PDF file. You will find a copy of the original file with an “_1” appended to the name of the file.

8. Rename the new copy to be the original name of the file without the “_1” appended (otherwise Acrobat will overwrite the file).

9. Open the PDF document properties dialog box again.

10. Click on the Options tab.

11. Uncheck the box that says “Overwrite Input File”.

12. Click OK.

13. Close the PDF document properties dialog box.

14. Re-open the original PDF file.

15. Notice the file is no longer open.



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