A dcext file extension is related to DC program. A dcext file stores plugin.
DCEXT file extension - DC plugin
What is dcext file? How to open dcext files?
File type specification:
The dcext file extension is associated with software called DC (may be Direct Connect client) and used for its plugin files.
Probably discontinued software without support from developer or producer.
This dcext file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.