Your server may have a "security" rule that blocks the creation or download of large .zip files. You can try changing how Duplicator packages your site. Go to . Locate the Archive Engine setting.
While it's frustrating to see the installer download perfectly while the archive fails, there are several reliable ways to bypass this and get your migration or backup moving. 1. Manual Download via FTP/SFTP (The Most Reliable Fix)
Navigate to /wp-content/backups-dup-lite/ (for the free version) or /wp-content/backups-dup-pro/ (for Pro). wordpress duplicator cannot download archive
Use your hosting File Manager to check the permissions of the archive file in the Duplicator backups folder. If it is set to 0600 , change it to 0644 and try downloading from the dashboard again. 3. Change the Archive Engine
Connect to your site using an FTP client like FileZilla or your hosting’s File Manager . Your server may have a "security" rule that
If you are seeing a message that file, you are not alone. This is a common hurdle that usually stems from server restrictions, browser security, or file permission errors.
Sometimes Duplicator creates the archive with restrictive permissions (like 0600 ), which prevents your browser from accessing it. Files should be set to 0644 and folders to 0755 . Locate the Archive Engine setting
Right-click the .zip (or .daf ) archive and the installer.php file to save them directly to your computer. 2. Fix Incorrect File Permissions
If the WordPress dashboard download is failing, the file is likely still sitting safely on your server. You can bypass the browser download entirely by fetching it manually.
Switch from "Zip" to (this creates a .daf file instead).