Proxmox Upload ISO Using SFTP
Instead of using the GUI you can simply use a SFTP client like Filezilla.
This way you can download and upload any files.
To do so open Filezilla and enter “sftp://server-ip” into the “Host” field.
Then enter “Username” and “Password” and leave “Port” empty.
If you use private key authentication add your key to Filezilla in Edit -> Settings -> SFTP -> Add key file and leave the password field empty.
You can also use PuTTY Pageant instead.
In order to upload a ISO navigate to