I have a large install(1.7GB) that includes a lot of data. I'm using a web install so the installer is code-signed and it gets all the .bin files from our website.
We've had no problems until now.
One customer can download the exe and start it. It will go through the motions of setting the target directories and options but then fails on the first or second file download.
Their IT dept says that they've removed all restrictions through the firewall and AV protection.
I'm flummoxed. Is there a check list somewhere that I can go through to make sure I've dotted my i's and crossed the Ts?

If I send them a non-web install it worked fine. That was with only some sample data.
Chris C