I have a customer that is getting this error message when running our
web installer.

Works fine on our machines and many other clients. I've seen this in
the past and it's usually firewall/AV related

I have asked him to:

Turn off AV (says he did)

Turn off Firewall (says he did)

Says he's connected directly to the internet Time-Warner/Spectrum (no
firewall - hard to believe - but he also says he's not on a network) I
don't know what TW/Spectrum provides.

He can download our full installer and it works fine, but that doesn't
satisfy him.

Any way to get SB to give more info?

Suggestions?

Paul MacFarlane