Hello, Neyl.
Could you please attach a screenshot of the error message to your next forum post?
You should be able to use both UltiDev Cassini and UWS if you access the application via loopback network interface that has IP (IPv4) address 127.0.0.1, IPv6 address [::1] and hostname "localhost". Even PCs with no network card or modem can use loopback addresses, like http://localhost/,
http://127.0.0.1.
Please let us know if this information was helpful.
Best regards,
UltiDev Team.
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