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D
defaultil16k85nzofi
Participant
February 15, 2021
Answered

Adobe reader - This signature is invalid because there are errors in the formatting

  • February 15, 2021
  • 4 replies
  • 15389 views

It seems like with the new update to Adobe Reader we are having issues with "signatures" 

When we received a signed PDF,  it shows: "Signed by Unknown" and then the reason is: This signature is invalid because there are errors in the formatting or information contained in this signature"

 

Can you please advise how to solve this?

 

 

This topic has been closed for replies.
Correct answer Meenakshi Negi

Hi All,

 

Thank you for your patience.

 

Adobe released an update to Adobe Acrobat Reader that addresses an incorrect error message associated with a valid digital signature. 

Please ensure that you update the application to the latest version. In the application, go to Help > Check for updates.

You may also download the latest patch from here: https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/continuous/dccontinuousfeb2021qfe2.html#dccontinuousfebtwentytwentyoneqfe2 

For more information on updates, please refer to this link: https://helpx.adobe.com/acrobat/release-note/release-notes-acrobat-reader.html 

 

Let us know how it goes.

 

Thanks,

Meenakshi

4 replies

N
Ngo5C2A
Participant
August 29, 2021

Hello, 

This problem happens a gain with Adobe Reader 21.005.20060.

 

Please find the pdf file at https://doclinks.blob.core.windows.net/mediatest0303430876/SRC/pbs.BO.LA.NA_2021_08_29_182033_signed_20210829222034.pdf

 

Testing Certificate for signing: https://doclinks.blob.core.windows.net/mediatest0303430876/SRC/Richard%20Hendricks___richard@spc-technology.com.zip

 

Regards, 

Meenakshi Negi
Community Manager
Meenakshi NegiCommunity ManagerCorrect answer
Community Manager
February 23, 2021

Hi All,

 

Thank you for your patience.

 

Adobe released an update to Adobe Acrobat Reader that addresses an incorrect error message associated with a valid digital signature. 

Please ensure that you update the application to the latest version. In the application, go to Help > Check for updates.

You may also download the latest patch from here: https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/continuous/dccontinuousfeb2021qfe2.html#dccontinuousfebtwentytwentyoneqfe2 

For more information on updates, please refer to this link: https://helpx.adobe.com/acrobat/release-note/release-notes-acrobat-reader.html 

 

Let us know how it goes.

 

Thanks,

Meenakshi

Y
Yogesh5C10
Participant
June 19, 2021

I am facing the same issue for a document. Installing the patch has not helped. Can you tell me why this issue happens in the first place? 

X
Xware
Participant
February 18, 2021

i and multiple users are experiencing this since the last security update.  this is only effecting Acrobat Reader.  when a document signed with doccusign is opened in reader it displays signature is invalid.  

 

when you go to the signature panel it shows

"there are errors in the formatting or information contained in this signature"

 

THIS ONLY EFFECTS READER,  if the same document is opened in Acrobat Pro then the signature validates fine!

 

ADOBE PLEASE FIX THIS,  i can confirm that versions prior to the latest release of Reader do not have this issue!

Meenakshi Negi
Community Manager
Meenakshi NegiCommunity Manager
Community Manager
February 15, 2021

Hi there,

 

Thank you for reaching out and sorry to hear that you are experiencing the issue.

 

Could you please confirm if the issue occurs with some particular PDFs?

Would you mind sharing any sample PDF with us so we can check it on our end?

Please share the Acrobat Reader DC and OS version you are using on the machine.

 

Thanks,

Meenakshi

D
defaultil16k85nzofiAuthor
Participant
February 16, 2021

Thank you for getting back to me. 

 

We are running WIndows 10 OS and the newest version of Adobe reader DC - 2021.001.20135. 

If i instal older version of DC I dont have the same issue.

I dont think I can share the PDF itself, but the PDF is signed with Docusign.

 

Hope that helps.

 

Kind Regards

 

Eva

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