Hi there, I am writing because I am baffled by this problem.
I have two PDFs, signed by the same person. All the properties of the signature are exactly identical. Yet for some bizarre reason, one shows a warning message "At least one signature has problems" while the other does not.
Now, please note that My issue is not necessarily to get rid of that warning. At some point, if I can figure out how to make it go away, I may investigate that. For now, my focus is on the Discrepancy between the two documents
Is there anything that would cause one document to show a signature warning, while the other does not? The signature properties are 100% identical for each document.
Thanks for your help. I don't mean to sound pushy, but I know full well how frustrating it is to seek help in a forum and have people (despite good intentions), focusing on the wrong part of the issue.
Yes, it says Signature validity is UNKNOWN
But therein lies my problem. The other document we have is identically signed with the exact same properties and the exact same warning message. HOWEVER, the warning doesn't show up in a yellow menu bar saying "At least one signature has problems" like the other document. The only way I can verify that the document that DOESN'T show the warning has the same signature properties is to navigate to it manually and right click and check the properties that way.
Essentially, I'd like both to not have any warning bar. Worst-case scenario is I have the creator/signer re-create the document and see if it was just a freak thing... I just hate not knowing why something like that would happen to one document but not another, even though they use the exact same signature
Windows 7 Pro and Adobe Reader X, but we use an XP Pro Citrix client with Reader 9, that I also tried it in, with identical results.
I appreciate the help, and I apologize for not being able to provide more from my end
Please let us know the exact version of Adobe Reader on your system. You can get the same by clicking on Help > About Adobe Reader from within the Reader application.
Also, could you please confirm if the PDF file wasnt modified post signing the PDF. If it was indeed edited, then the message bar would be displayed.
Hi there, thanks for the reply.
I am using version 10.1.0 on Windows 7 Pro. However, to test it, the problem also occurred on my Citrix client which runs version 9.4.3 on Server 2003.
I really think it's a bug. As I had mentioned before, the signature properties of both documents are identical. When viewing them, a short list of criteria shows that neither have been modified post-signature. Still, regardless of what I do, the one document flashes the warning and the other doesn't. I don't know what else could have set it off.
The "short list of criteria" I mentioned is the Validity Summary:
1) The Document has not been modified since this signature was applied.
2) The signer's identity is unknown because it has not been included in your list of trusted identities and none of its parent certificates are trusted identities.
3) Signing time is from the clock on the signer's computer
Now, there is a check mark beside 1) indicating that it has not been modified. 2) and 3) show the warning labels beside them.
I know what you're thinking: "If the original warning says 'Signature validity is unknown', and number 2) shows a warning sign, then there's your problem, dummy!"
The problem is, the exact same things appear in the document that doesn't show me a warning label when I open it.
It's got me stumped
Europe, Middle East and Africa