Thanks Stephen / Rob,
Upon further digging, it seems I might be wrong in thinking the connection
string is to blame.
I have found this article:
https://khailiangtech.wordpress.com/2011/06/03/windows-azure-how-to-enable-classic-asp-support/
It details the need to run a little script to enable Cla
Ah you just reminded me.
There is a script that I execute when the Azure instance spins up.
It was a few years ago, but I think I had to use a webrole, not a website, so
that I could execute a script to register some email dlls.
start /w pkgmgr /iu:IIS-ASP
I think websites support classic as