Before you open signed documents, set your preferences to optimize Reader for validating signatures.
These options specify methods that determine which plug-in to choose when verifying a signature. The appropriate plug-in is often selected automatically. Contact your system administrator about specific plug-in requirements for validating signatures.
|Require That Certificate Revocation Checking Be Done Whenever Possible During Signature Verification||
Select this option to require certificates to be checked against a list of excluded certificates during validation. If this option isn