Thomas, Thanks for the report. I'm CC'ing as documented here[0] to get their opinion. Thomas C Kosvic 写道: > [0] does not download a file, it tries to open the file in > thevrowser. This is not universal: it works fine in Firefox 100. However, there does seem to be an inconsistency with the GNU FTP server: ~ λ curl -LI https://ftp.gnu.org/gnu/guix/guix-system-install-1.3.0.x86_64-linux.iso | grep Content-Type X-Content-Type-Options: nosniff Content-Type: application/x-iso9660-image ~ λ curl -LI https://ftp.gnu.org/gnu/guix/guix-system-vm-image-1.3.0.x86_64-linux.qcow2 | grep Content-Type X-Content-Type-Options: nosniff The QCOW2 response is missing a Content-Type, whilst asking browsers not to sniff it for themselves. Apparently your browser is making an exceptionally bad call. Kind regards, T G-R [0]: https://ftp.gnu.org/gnu/guix/guix-system-vm-image-1.3.0.x86_64-linux.qcow2 [1]: https://ftp.gnu.org/