![]() ![]() 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 he or she got by following CKCS #180: Digital Certificates. ![]() ![]() Please fill out the following form." How do I fix this error?Īdobe doesn't recognize the certificate used for one or more of the signatures in the PDF. I received a PDF that has a banner at the top saying "At least one signature is invalid. ![]()
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