Adobe applications {Comments merging issue}

@Prakash S Since you've tried the common fixes like reinstalling both Acrobat 10 Pro and Acrobat DC Reader, and even clearing files and registry entries, the issue might be rooted in a corrupted or misconfigured user preference file, a specific document setting, or an interaction with your operating system (OS), which based on the snapshot you mentioned, we can assume is a version of Windows. The permanent solution likely involves manually clearing the Acrobat User Preferences Folder or addressing potential file corruption within the document itself or the Windows configuration.

Acrobat 10 Pro is a very old version (2010) and is End-of-Life (EOL), meaning it no longer receives security or compatibility updates. The interaction between this old version and the modern DC Reader on the same system is a significant factor that can cause stability issues. The most robust "permanent" fix, if the preference reset fails, would be to upgrade Acrobat 10 Pro to a currently supported version to eliminate compatibility conflicts.