Dec 23, 2015 08:45 AM|Zhi Lv - MSFT|LINK
Hi Gunjan Chandola,
I suggest you could refer to the following thread:
Windows authentication requires both machines to be in a domain and that the domain will be the same one.
If you want to cancel authentication at all wither use basicHttpBinding and not wsHttpBinding (the default) or add a binding configuration with security/mode="None".
Besides, here are some relevant articles about WCF Service authentication, you could refer to them: