Notes about the HRF file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The HRF file type is primarily associated with 'Hitachi Raster Format Graphic'. CADCore bitmap image (Hitachi Raster Format)
Detailed information for file extension HRF:
Primary association: Hitachi Raster Format Graphic
Mime type: application/hrf, application/x-hrf, image/hrfIdentifying characters
Hex: 43 41 44 43 2F 4B 52 20 52 53 54 , ASCII: CADC/KR RST
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.