If you are encountering issues with an older version of Acrobat, standard practice—as noted in 2018 and recommended by the Adobe Community —is to check for and install the latest available patch.

It was designed to address crucial bugs identified after previous releases, specifically focusing on rendering errors, crashes, and permission issues.

Occasionally, applying older point patches can disrupt browser extension communications. Manually re-enabling the Adobe add-on within the target browser's extension management console or pushing an updated registry key via Group Policy Object (GPO) typically restores functionality. Cryptographic Signature Verification Errors

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For the most current security and stability, it is strongly recommended to check for the latest updates via Help > Check for updates in Acrobat.