Error display certificates

[Jose Francisco Sobrino Lopez]

Company certificates are not displayed correctly causing errors to be commented when applying the correct certificate 

[Bani Verma]

Hi Jose,

Please create a test certificate-based signature, and try applying it
Also, could you please let us know the current version of Adobe Acrobat or Reader installed, you can take help from the article https://helpx.adobe.com/acrobat/kb/identify-product-version.html.

As an additional troubleshooting step, you may try installing the latest version of Adobe Acrobat/Reader DC (19.021.20056 Optional update, November 13, 2019) from the help menu in the application and then reboot the machine.

Once Adobe Acrobat/Reader is updated check if you are facing this issue with one specific PDF for with all? 

To test and confirm, please navigate to Edit>Preferences>Security(enhanced)> and uncheck 'Protected View' and 'Enhanced Security'>click OK, restart the application and check.
Note: Please reenable the enhanced security and protected view, as we are disabling them only for the testing purpose.

For reference please take a look at this help document:
https://helpx.adobe.com/in/acrobat/using/securing-pdfs-certificates.html#certificate_security 

Let us know if this helps or if you have any more queries.

[Jose Francisco Sobrino Lopez]

Still the same