![]() ![]() The row should state‘ ‘The University of Texas at Dallas RSA.’ Select the row above the one with a warning sign in the new window.To do that, expand a Signature and then the "Signature Details" section by clicking the arrows adjacent to them. However, you need to validate only one signature to remove this error. ![]() You will be able to see all the signatures which are causing the issue.Then, click on the Signatures icon in the left-hand sidebar. Click the Signature Panel button in the banner where the error is.If you are the recipient of a PDF that was signed using a UTD-issued certificate, you will need to "trust" UTD's main certificate (the one all individual UTD certificates are validated against) in Adobe. Commonly, this is because the signer used the UTD-issued certificate they got by following CKCS #180: Digital Certificates. I received a PDF that has a banner at the top saying "At least one signature is invalid." How do I fix this error? ExplanationĪdobe does not recognize the certificate used for one or more of the signatures in the PDF.
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