Notes about the D64 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 D64 file type is primarily associated with 'Commodore 64'. A popular Commodore file format. Used by the 1541, 2031, 3040, 4040 drives. (.X64 is preferred.)
Detailed information for file extension D64:
Primary association: Commodore 64
Mime type: application/d64, application/octet-stream, application/x-d64
To change file associations press
Windows Key +
X 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.
