hi i am not able to validate the signature in the PDF

Validate signature error: e48f27da0b1b9188de20bc4374604f39808077896214c85d974ccaf1f0c004d4ab2bda344ad0d1728aeff278c25a2ea01f7a45662b1924d407f12ad1cf7e318500 is signed by TZD25tqtM1JcCG1vbJQRK3EsLGTPjRHuRW but it is not contained of permission.

I was facing the same issue, I was not seeing validate signature option. Instead it was showing add signature, which was taking me to create and add new signature.

The problem was because I had changed the name of PDF file.
TO fix this, I downloaded the file again from aadar website and then it worked.

 unable to save in pdf after validate signature 

Validate Digital Signature in PDF

https://youtu.be/IIFI9GZdznM

https://certificate.nielit.gov.in/pdf/Steps_to_Verify_Digital_Certificate.pdf 

I had a file in Gmail that was password protected and I was not able to validate the signature after saving it as a PDF file. Because it was a valid failure as the original document was changed. So it forwarded the mail to my outlook account, there I got the option to open with Adobe Acrobat Reader DC. Then I was able to validate signatures. Hope this helps someone.

Just remember that, in removing the password you have removed the signature. So keep the original (and its password) for any legal reasons where you have to prove the original.

What you’ve done is shown successfully that there is a problem with the signature so it can’t be verified.

I wonder, did you print this to PDF at all?

Hello Smijis,

As per the description above, I can understand that you are not able to validate a signature in a PDF file, Is that correct?

When Digital Signatures are validated, an icon appears in the document message bar to indicate the signature status. Additional status details appear in the Signatures panel and in the Signature Properties dialog box.

Is it possible to post a screenshot of the error message you get? To share the screenshot, refer to the steps mentioned in the article https://forums.adobe.com/docs/DOC-7043#jive_content_id_How_do_I_attach_a_screenshot

What is the dot version of Adobe Reader installed? To identify refer to Identify the product and its version for Acrobat and Reader DC

Is it specific to one PDF file or with all the PDF files? Is it a Mac or Windows machine and what is the version of operating system installed?

You may try the following steps and see if this helps:

1) Right-click on the ‘validity unknown’ icon and click on ‘Validate Signature’.

2) You will get the signature validation status window, click on ‘Signature Properties’.

3) Click on ‘Show Certificate..’

4) Verify that there is a certification path. This identifies the owner of the digital certificate that has been used when signing the document.

5) Mark the certification path, click the 'Trust' tab and then 'Add to Trusted Identities'.

6) Answer 'OK' to any security question that follows.

7) Check the field for 'Use this certificate as a trusted root' and click 'OK' twice to close this and the next window.

8) Click 'Validate Signature' to execute the validation.

You can also refer to the Adobe article Validating digital signatures, Adobe Acrobat

Let us know how it goes and share your findings.

Regards,

Anand Sri.

What are the detailed messages in full when you try?