We are extremely sorry for the inconvenience caused.

To troubleshoot the issue, can you please share the crash dump with us?

Steps to create dump:-

Press 'Start' key and search for 'cmd'.
Launch the Command Prompt in admin i.e. 'Run as Administrator' mode.
Run these four commands in a one-by-one manner:

REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps"
REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps" /v DumpFolder /t REG_EXPAND_SZ /d "%LOCALAPPDATA%\CrashDumps"
REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps" /v DumpCount /t REG_DWORD /d 0x00000040
REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps" /v DumpType /t REG_DWORD /d 0x00000002

Retry the scenario where Reader crashes.
Press Win+R and type "%LOCALAPPDATA%\CrashDumps" and press Enter
You will see .dmp file generated file recently.
Please share that dump with us. Note it will be a large file.
You may upload the logs to Adobe Send and share the link with us via email (vinchauh@adobe.com): How to share a file using Adobe Document Cloud (https://forums.adobe.com/docs/DOC-7161)

Thanks,
Vineet