Error: Connection timed out after 20 seconds of inactivity
Error: Failed to retrieve directory listing
The latest version of FileZilla forces TLS encryption on plain FTP connections. This applies both to new sites you create in the Site Manager, as well as any sites you have previously configured.
You can resolve this problem by resetting your accounts to use plain, unencrypted FTP connections. To do this, follow these steps:
On the File menu, click Site Manager.
Under Select Entry, click the site.
On the General tab, in the Encryption list box, select Only use plain FTP (insecure).