I am also facing the same situation. I believe the issue is the firewall is blocking http traffic. Does anyone know if there is a setting to force bigfix to download over https rather than http? I confirmed that microsoft makes both (for example)
http://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/office/data/16.0.18730.20168/stream.x86.x-none.dat
and
https://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/office/data/16.0.18730.20168/stream.x86.x-none.dat
accessible.
Just came across this other forum post that goes into this issue in more detail: Download patches on Https instead of HTTP - #11 by adinia
It’s been 2 years since it was posted. Any progress made? Is there now a setting in BigFix 11.0.x that supports forcing all downloads in actionscript to go over https?