Patrik, with your help I am able to download the file on the "Virtual Machine". So I have a file now under the /home/erpnext folder which is my database file. I used "wget localhost/backups/databasefilename". I am now stuck with how can I take this file from the virtual machine, and perhaps how I can send it to the virtual machine again. I have been trying many stuff since morning. I am not good at it an I need some help.
Perhaps it's outside the scope of erpnext. But it's too hard for a windows user like I am. And backing up and restoring is very important.
Best regards,
Ahmed