Acrobat Reader DC (Windows) crashes when signing with smart card
I am using Adobe Acrobat Reader DC Version 2021.005.20048 on a fresh installation of Windows 10 Pro 21H1 (x64) (OS Build 19043.1052).
When I am trying to digitally sign a PDF document with a smart card, Adobe Reader crashes sometimes after the PIN entry.
What seems to make the crash more likely is when I have just inserted the smart card and when I do not wait on the PIN prompt.
There is a known issue listed at https://helpx.adobe.com/acrobat/kb/known-issues-acrobat-dc-reader.html:
- Problem: [EPV] Crash on signing with smart card on Windows version 1809. [4286080]
I am wondering whether I might be experiencing the same issue here on Windows version 21H1.
I have followed the steps at https://helpx.adobe.com/acrobat/kb/collect-logs-crash-freeze.html# to enable the Adobe crash reporter and Windows error reporting. The Adobe crash reporter is not displayed when the crash happens, but a dump file is written (size is around 270MB). The webpage states that the dump file can be submitted to Adobe support, but I was unable to find any support options for Adobe Reader DC beyond this forum.
For test purposes I have tried disabling the Protected Mode as suggested in this thread: https://community.adobe.com/t5/acrobat/digitally-signing-pdf-with-certificate-on-smart-card-adobe-acrobat-freezes/m-p/11657014
When Protected Mode is disabled, I was so far unable to reproduce the crash. However, as also stated in that thread it's probably not a good solution to turn the protection off.
