In the second popup box, check the option Use this certificate as a trusted root.Go to the "Trust" tab and select Add to Trusted Certificates.The row should say "The University of Texas at Dallas RSA CA." In the new window, click the row above the one with a warning sign.Download your E-Aadhaar and open the pdf in Adobe Reader only Right click on the 'validity unknown' icon and click on 'Validate Signature' You will get the signature validation status window, click on 'Signature Properties'. In the left-hand sidebar, expand the signature and then the Signature Details section. Computer must be connected to internet while validating digital signature.They will all be fixed if you follow this process. If there are multiple signatures like this, you only have to do the following steps for one of them.Then, on the left, find the signature with a red X next to it. 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. 2) You will get the signature validation status window, click on Signature Properties. 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? ExplanationĪdobe doesn't recognize the certificate used for one or more of the signatures in the PDF. If this is not the solution you are looking for, please search.
#PDF SIGNATURE VALIDITY UNKNOWN HOW TO#
I received a PDF that has a banner at the top saying "At least one signature is invalid. This article will provide you with guidelines on how to troubleshoot Invalid PDF Signatures.
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