Notes about the QCOW2 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 QCOW2 file type is primarily associated with 'QEMU' by Fabrice Bellard.
QEMU is a VM (Virtualization Machine) software application available in source code and compilable for a variety of Operating Systems. It is also available in the .tar.gz and .git formats. Qemu can also be used as an emulator, with the ability to run software intended for platforms other than the PC.
Images created with QEMU can be saved as .QCOW2; QEMU's own COW (Copy-on-Write) image format with support for AES and zlib.
Detailed information for file extension QCOW2:
Primary association: QEMU
Company: Fabrice Bellard
File classification: Archive
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.