{"id":35945,"date":"2019-02-20T11:56:29","date_gmt":"2019-02-20T10:56:29","guid":{"rendered":"https:\/\/www.viafirma.com\/faq\/there-is-at-least-one-signature-that-presents-problems-how-to-solve-it\/"},"modified":"2024-02-23T12:00:11","modified_gmt":"2024-02-23T11:00:11","slug":"there-is-at-least-one-signature-that-presents-problems-how-to-solve-it","status":"publish","type":"faq","link":"https:\/\/www.viafirma.com\/en\/faqs\/there-is-at-least-one-signature-that-presents-problems-how-to-solve-it\/","title":{"rendered":"&#8220;There is at least one signature that presents problems&#8221;, how to solve it?"},"content":{"rendered":"<section class=\"container pt-2\">When opening a signed PDF file, Adobe Acrobat Reader may display the following error message when checking the electronic signature: &#8220;There is at least one signature with problems&#8221;. In newer versions of Adobe Reader, this message will be displayed as:<strong><em>&#8220;The validity of the document certification is UNKNOWN. The author cannot be verified.&#8221;<\/em><\/strong> This message appears in the Signature Panel and in the signature stamps (if any).<\/section>\n<section><\/section>\n<section>This is because<strong> Adobe Reader does not have the Certificate Authority<\/strong> that issued the certificate to sign the pdf (for example FNMT, Camerfirma, Firmaprofesional, Avansi&#8230;) identified as a trusted issuer.<\/section>\n<section><\/section>\n<section>To<strong> solve the error <em>&#8220;There is at least one signature with problems&#8221;<\/em><\/strong>, we will configure Adobe Reader to trust the issuer of the certificate to validate the digital signature.<\/section>\n<section><\/section>\n<section>In the following link you have a guide with the steps to follow:<a href=\"https:\/\/www.viafirma.com\/en\/faqs\/management-trusted-certificates\/\"> Managing trusted certificates in Adobe Reader.<\/a><\/section>\n","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[181],"class_list":["post-35945","faq","type-faq","status-publish","hentry","category-developers-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/faq\/35945","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/faq"}],"about":[{"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/types\/faq"}],"version-history":[{"count":0,"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/faq\/35945\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/media?parent=35945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/categories?post=35945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}