Explorer views vary with content type. Modify thus:
A. Add essential columns - e.g. Name, Date modified, Size
Steps: View > Add columns > Choose columns
Optionally change display order by dragging columns
B. Save view for all folders of same type
Steps: View > Options > Change folder and search options > View > Apply to Folders (in resulting popup, choose whether to match folder settings in all folders of same type)
Republished as necessary, because I always seem to forget the detail of these settings!