When you experiencing that downloaded files have a wrong extension in Firefox (.part) enable either Permalinks (SEO friendly URLs) in WordPress Settings or enable “Always Force Download” in WP-Filebase Download settings.
FYI: one of these options must be enabled, because otherwise the browser gets no information about the file name, only the MIME type is sent in HTTP headers. Chrome & Safari seem to handle it without a Content-Disposition Header (i.e. Chrome names files “Download.pdf” if the content type is application/pdf). Firefox does not care about the content type and just gives the file the extension .part.
One thought on “How to fix .part Downloads in FireFox”
thanks for the solution ??