FNMT certificate isn't valid in Adobe Reader

When I get a PDF document signed with certificate FNMT (legal Spanish Fábrica Nacional de Moneda y Timbre) it appears as 'unknown' in the PDF document. FNMT changed this certificate two years ago, and with the old certificates, this does not happen. It happens with the new certificates. Old certificates are valid because they are in the trust list of the European Union (from Adobe server) but it is possible that the new format of certificate is not included in this list, and it may be the reason why it appears as 'unknown '. Is it possible that Adobe are a solution for this?

Go to Edit - Preferences - Trust Manager and try to update all certificates (the Adobe approved ones, and the European Union has approved those) and then try again.

Tags: Acrobat

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