Otherwise, skip here and don’t validate your signatures. If you received the PDF document from a trusted source or the certificate is from a trusted source, click on the “ Add to Trusted Identities…” button. It will display “Trust Settings” and “This certificate is not trusted” messages. From the Certificate Viewer window, click on the Trust tab. It will open the Certificate Viewer window to view the details of a certificate. Adobe Reader – Signature properties window Adobe Reader will display the Signature Properties window. Adobe Reader – Show Signature Properties menu itemįrom the pull-down menu, select the “Show Signature Properties…” menu item. Select the signature which has the problem and right-click on it. If you are still seeing the “At least one signature has problems” message, proceed with the next steps. Adobe Reader – Signed and all signatures are valid If the signatures are successfully validated Adobe Reader, will show the “Signed and all signatures are valid.” message. Once all the signatures are validated it will show a success message depending on the settings. Click on the OK button to validate all the signatures. Adobe Reader – Prompt for validating all signatures It will prompt the message to validate all signatures depending on the settings. Click on the “Signature Panel” button which will be on the right of the message. Adobe Reader – PDF – At least one signature has problems If there is a signature problem with the document, it will show the message “At least one signature has problems” message. Open your PDF document in the Adobe Reader application. The below steps explains how to resolve this issue. When there is any digital signature required to authenticate the PDF documents are not available on your system or the signature has problems, Adobe Reader fails to authenticate the document, and will display the “At least one signature has problems” message. And also PDF documents may be digitally signed for authentication. The PDF documents may be encrypted for security. Adobe Reader software is used to open PDF documents.
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