cuando trato de firmar digitalmente un documento no sale el desplegable de los certificados.
Would you mind sharing the version of your OS and the Acrobat Reader DC you are using? To check the version go to Help > About Acrobat and make sure you have the latest version 21.07.20095 (Win) , 21.07.20096 (Mac) installed. Go to Help > Check for updates.
Try the troubleshooting steps given in the following links discussing the similar issue:
Let us know how it works at your end. If you have any further queries please feel free to reach out to us.
thanks for your reply.
My Adobe Acrobat Standard Version is 2021.007.20099 and my OS is Windows 10 Enterprise 20H2
I'm having the same problems. Can you tell me something please of how to fix it ??