Certificate e-signing only works once

[Guest]

I have several users who report that they are unable to sign more than one document at a time. We are using Smart Cards that hold the certificate and when we try a 2nd time to sign a document the field where we enter the PIN is missing. At this point we must close Adobe DC and restart.

[Adorobat]

Hi RockyRob

Could you please let me know the version of Acrobat DC installed on the machine?

To check the version of Acrobat, launch Acrobat>navigate to Help menu>select About Adobe Acrobat...

Which Operating System is installed on the machine- Windows/Mac?

[Guest]

I'm running:

Adobe DC 2015 release

Architecture: x86_64

Build: 15.17.20050.192152

AGM: 4.30.65

CoolType: 5.14.5

JP2K: 1.2.2.36712

I'm running it on a Mac with MAC OS 10.11.6