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1. Re: PDFs Requiring Password to Open When That Option is NOT Configured
try67 Jun 11, 2013 10:00 AM (in response to Pariah Burke)You need to get more full details from the users with the problems, such as:
- Double-checking that they requested to enter the password when the file
was opened.
- Application(s) used to open the file.
- OS used
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2. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Pariah Burke Jun 11, 2013 10:03 AM (in response to try67)I'm working on getting that information, but you know how people are when they're "Adobe doesn't work."
In the meantime I'm hoping others here can verify either the expected behavior or the problem.
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3. Re: PDFs Requiring Password to Open When That Option is NOT Configured
try67 Jun 11, 2013 10:04 AM (in response to Pariah Burke)I opened the Photoshop file in Acrobat and Reader XI and it opened just
fine.
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4. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Test Screen Name Jun 11, 2013 10:08 AM (in response to try67)Background info: these files do not have a password but they are encrypted (because you set some security options). One of the characteristics of an encrypted file is that if the file is mangled/damaged, then it will look as if it needs a password.
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5. Re: PDFs Requiring Password to Open When That Option is NOT Configured
George_Johnson Jun 11, 2013 10:11 AM (in response to Pariah Burke)The encryption used means it can only be opened by Reader/Acrobat versions 10 or higher. There's really no reason to use this level for this document, so I'd suggest using something less.
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6. Re: PDFs Requiring Password to Open When That Option is NOT Configured
try67 Jun 11, 2013 10:16 AM (in response to George_Johnson)Well spotted. That's more than likely the problem...
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7. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Steve Werner Jun 11, 2013 10:24 AM (in response to try67)Customers could also be using non-Adobe PDF readers. Since you can't control this, all you can do is provide a suggestion to download the free Adobe Reader for best results.
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8. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Pariah Burke Jun 13, 2013 7:55 AM (in response to George_Johnson)Thanks, George. When did Acrobat/Reader change from warning users that the later-version PDF might have features that won't display to asking for a password?
Once upon a time one could rely that any modern version (from BAT/Reader 5.x up) would at least open the PDF even if certain features failed to work or the reader was giving a warning that the file was created with a newer version.
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9. Re: PDFs Requiring Password to Open When That Option is NOT Configured
George_Johnson Jun 13, 2013 8:08 AM (in response to Pariah Burke)I suspect they're using a non-Adobe PDF viewer, as Steve mentioned. Have you been able to confirm what they're using?
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10. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Pariah Burke Jun 13, 2013 8:22 AM (in response to Pariah Burke)Worse.
When exporting Interactive PDF from InDesign CS6 or CC the ONLY PDF version that results is 1.7.
Yes, I can save down within Acrobat XI Pro, but that's not the point. Many, many publications are created as interactive PDFs exported from InDesign, and most of those carry some type of security. Now no one without Reader 10 or later can open those PDFs?!
Oh boy.
I'm bringing this to the Acrobat and InDesign product managers.
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11. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Pariah Burke Jun 13, 2013 8:22 AM (in response to George_Johnson)Reader 9 in the case of one person who tested for me.
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12. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Pariah Burke Jun 13, 2013 8:54 AM (in response to Pariah Burke)I've just uploaded new versions saved back to Acrobat 7 compatibility (the lowest I can go in BAT XI while preventing copying of the PDF content). Would you mind testing those, too?
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13. Re: PDFs Requiring Password to Open When That Option is NOT Configured
LC_2013 Jun 28, 2013 3:58 AM (in response to Pariah Burke)I'm having problems with a small number of my PDFs. When I saved to view the problematic PDFs, either Firefox or Adobe seem to have changed my PDF security settings to:
Can be opened by: Adobe Acrobat 3 and onwards
Increases the PDF file size
Disables Fast web view
from:
Can be opened by: Adobe Acrobat 5 and onwards
Enabled Fast web view
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14. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Test Screen Name Jun 28, 2013 4:02 AM (in response to LC_2013)How are you saving these PDF files, exactly, and what are you doing before saving?
Supplementary question: if you open the original file in Adobe Reader and close, is there a prompt to save?
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15. Re: PDFs Requiring Password to Open When That Option is NOT Configured
LC_2013 Jun 28, 2013 4:09 AM (in response to Test Screen Name)In the prompt box asking to enter a password to open PDF, I click 'cancel'. I then click 'open with different viewer' in the top right (Firefox 22.0) which gives me the option to save or open.
If I open the file in Adobe Reader and close, I am not prompted to save.
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16. Re: PDFs Requiring Password to Open When That Option is NOT Configured
Steven.Madwin Nov 13, 2013 6:18 PM (in response to Pariah Burke)Hi Pariah,
There are two things here, 1) what is the version of the unencrypted PDF, and 2) how was the file encrypted.
The "may not display correctly" message occurs when the version of the PDF file is greater than what the PDF viewer (for us that's either Acrobat or Reader) understands. As an example, when Acrobat 1.0 came out 20 years ago it only understood PDF version 1.0. When Acrobat 2.0 was released it understood PDF version 1.1 and earlier. By Acrobat 8 it understood PDF version 1.7. If you had a PDF file that was version 1.7 and you opened it in Acrobat 7 (which I'm sure you've figured out only understands PDF v 1.6) then you'd get the "may not display correctly" message. Acrobat 7 would do its best to render the PDF, but if it came across something it just didn't understand it wouldn't (couldn't) display it.
Encryption is a bit different. Let's say you encrypt a file using Acrobat 10 and use the AES 256-bit encryption algorithm. If someone where to try and open the file in version 8, which only understands AES 128-bit encryption the the file could never be opened.
Finally there is the issue about how the password is saved. Acrobat 10 and later use a different methods of Unicode normalization and canonicalization then previous version, so if you've save a password using the Acrobat 10 or later settings then earlier versions cannot properly check that the password you've typed in matches what the document author set. I know this message thread started with the notion that there is no Document Open password, but it's not quite that simple. There really is a password, its just set to "NULL". However, Acrobat (and Reader) versions 9 and earlier cannot reconcile "NULL" set in 10 as they would "NULL" set in 9 and before. Thus, when the file tries to open in an earlier version you get prompted to reenter the password.
Steve





