Fail to open pdf documents with self-signed certificate in Android, IOS and Mac OS

Question

Hello everyone,I have a big problem. I have several pdf documents signed with a self-signed certificate (created by me from Microsoft Internet Information Server).I have installed my self-signed certificate in Windows 10 operating system and I can open those documents without problems. But when I try to open those documents in Android, IOS (iphone) or Mac OS, I always get the same error: "The file is possible to be damaged or format which Preview View does not be able to recognize" or something like that. I have installed the self-signed certificate in them as well.I have tested with diferents certificates and pdf versions (when I convert it from a .docx file for example) and I always get the same result in Android, IOS and Mac OS.What is the problem? What am I doing wrong?Best regards,Jarol

Adorobat · Accepted Answer

Hi Jarol,Sorry for the delay in response.As per the issue description mentioned above, you have signed a pdf using self-signed certificate in Windows 10 and when opening the same pdf in Android, you are receiving error that the file is damaged and preview is unable to recognize the file, is that correct?Please refer to the following links:Digital Signature Not Showing Up in Saved PDFDigital ID Signature Certificate on AndroidThank You,Shivam

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