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Thank you for reporting the issue.
First, can you please confirm if you are doing a digital signature or certify on the file
Second, can you please go to "Details"/"Detalhes" tab and check for Certificate Data. Please send a screenshot of the Key Usage and Extended Key Usage for the certificate (like in the screenshot below).
Third,are you able to use the same certificate for the same action, ie signature or certification signature on Windows, and is the version of Acrobat that you are using same?
Thanks and regards,
Please see atached files.
Hope to ear from you soon.
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2017-11-24 0:16 GMT+00:00 Adorobat <email@example.com>:
Certified signature error in MacOs High Sierra
reply on Certified signature error in MacOs High Sierra
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