I'm using gemalto usb token and SafeNet software to digitally sign my documents in Adobe Acrobat Pro. While everything worked fine and nothing has changed, I'm getting this error after entering my (correct) pin number. The message says: 'Error occurred during PIN validation'. According to authentication return values, it is related to:
SCARD_F_INTERNAL_ERROR: An internal consistency check failed.
Besides that, 'Validating Signatures' option in Adobe is disabled.
Thank you!
For somebody else encountering a similar problem: The error code is by PCSC, and so not necessarily card-related.
If other applications are also unable to verify the PIN, issue might be caused by reader driver, or as in the case above by any software required for accessing the card [here: SafeNet]. Re-installing those is worth a ttry.