Based on Free Download Managers website (https://www.freedownloadmanager.org/board/viewtopic.php?f=1&t=17900) the latest version (v6.10.0.3016 [Jun 5, 2020] STABLE) is portable and completely rebuilt compared to the 3.9 version we use now.
I suggest it should be updated the program to the latest version on portableapps.com.
Visit the Community page
Join our forums
Subscribe to our email newsletter
Subscribe with RSS
Follow us on Facebook
Follow us on LinkedIn
Follow us on Twitter
Follow us on Mastodon
Follow us on BlueSky
As per the Outdated Apps Thread:
External Dependencies: Free Download Manager 5.x - No longer open source, possible GPL issues, no response from publisher
https://portableapps.com/development/outdated
Sometimes, the impossible can become possible, if you're awesome!