Posted by Rallaz on
URL: https://forum.librecad.org/file-format-tp5709278p5709287.html

LibreCAD can open all versions of .dxf files, but the extension is not associated with LibreCAD

Win XP system:
Right click in a dxf file, select "open with" and "select program" (or similar)
in the opened window find librecad.exe and click in "always use..."