The <authentication mode="Forms"> element in web.config tells ASP.NET to use
Forms Authentication as the method for authenticating users.
Purpose:
It enables Forms Authentication for the web application.
ASP.NET uses this setting to know that when a user tries to access protected resources, the app should:
Redirect unauthenticated users to a specified login page.
Validate credentials submitted via that login form.
Issue an authentication ticket (usually a cookie) upon successful login.
It switches off other authentication modes like Windows or Passport authentication.
In short, this element activates the whole Forms Authentication system and controls how the application handles user login and identity. Without it, the app won’t treat users as authenticated via forms or manage the auth cookies accordingly.
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The
<authentication mode="Forms">element inweb.configtells ASP.NET to use Forms Authentication as the method for authenticating users.Purpose:
In short, this element activates the whole Forms Authentication system and controls how the application handles user login and identity. Without it, the app won’t treat users as authenticated via forms or manage the auth cookies accordingly.