ASP.NET : Connection String not working IIS - Internal Server Error

Question

So I have a WebAPI project with Individual Accounts, and I published it to a folder.

After that, I added a new website in IIS Manager. I created a new connection string with SQL Server Settings:

• Server : WINDOWSHOST\\WINSQLSERVER
• Database : Database2
• Credentials : Use Windows Integrated Security

Server=WINDOWSHOST\\WINSQLSERVER;Database=Database2;Intergrated Security=true

If I use WINDOWSHOST\\WINSQLSERVER and IntergratedSecurity in SQL Server Management Studio, I can log in successfully, but trying to create an account gives me an internal server error

Response from server :

Answer 1

Default IIS does not support using Windows Integrated Security. these are steps to enable windows authentication

• Select your website in IIS Manager.
• Double-click the Authentication icon under the IIS header.
• Right-click on Windows Authentication and select Enable.