Signature problems in Adobe Reader

[antoniog61780365]

Hello,

One of our customer uses internal Digital signatures.

The problem is, that signing a .pdf document via Adobe Reader randomly fails.

The users have to try 10 times, before it works. Sometimes, it works on the first attempt. Also, sometimes no errors, but the signatures are not added to the documents. Sometimes, there are errors, but the documents are signed.

It can work 3 days without problems and then, again this random errors. They have these problems locally and also with document based on shares.

I've tried to disable automatic update of Adobe Reader, but it didn't solve the problem. I've added the signature in the Trusted Identities, it doesn't solve it either.

I've attached some of the errors, they receive during the process.

Have you already seen this behavior?

I've tried to troubleshoot, without success...

Waiting for your tips... Thanks in advance.

Best regards

Antonio Galligano

[try67]

None of your attachments came through... If you want to attach a screenshot use the Insert Image tool. Do not paste the image or send it via an email reply.

[antoniog61780365]

Ok. Here:

[antoniog61780365]

Hello,

Any news on this problem?

best regards
Antonio

[antoniog61780365]

Hi Akki_24,

I did. When I use "Insert image", it post it as a screenshot (see attached).

In resume, the content of the picture is:

1. Error: Signature invalid

Signature was created using Adobe Acrobat Reader DC 2018.011.20055

Hash Algorithm: Not Available

Signature Algorithm: Not Available

1. Error: Error during signature verification

Signature processing error

1. It's a picture showing that the signature is valid (with the green check)

Hope it helps.

Thanks in advance…

Best regards

Antonio Galligano

[antoniog61780365]

Hello,

Do you have any news on this problem?

Thanks in advance...

best regards
Antonio