2
Yes, but... version 2.1 on IIS 5 and only on a localhost.
I don't recall having any server-related issues with the module, but there were some changes after IIS 6 and I haven't upgraded.
Like Apache + PHP, I guess success with the module depends on the IIS + PHP configuration offered by commercial hosts.
The reg-codes component was of great interest to me at the time, but sadly the client put the project on ice so I don't have any real-world usage to report on.
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