What if the Web installation prompts up with "IIS not found" as an error message?
This can be caused with unwanted bindings within the "Default Site" which are unrelated to the site itself.
This therefore causes the IIS Web server check to fail and does not allow you to continue with progress of the installation.
The below screenshot shows the bindings that would be causing the issue - kindly remove all bindings and keep only the "http" TYPE.
For more information about Installation, please look at the Installation tab in the Scan2x Handbook.