0 Replies Latest reply on Mar 11, 2017 1:23 AM by ruca54

    I am unable to digitally sign documents


      Hi there, I've been trying to digitally sign documents. Everything seems to be working fine, until I'm asked to type my citizen card PIN and then Acrobat returns the error message "The credential selected for signing is invalid". I'm using Acrobat Pro on Mac OS X Sierra. I have also tried with Acrobat reader, but to no avail. Can you please help?