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I've build some farm solutions for Sharepoint 2013 application with Form based authentication. I would like to know, can i configure form based authentication and windows based authentication on single site collection?

How it will work?
Richard Deeming 26-Aug-15 9:51am    
Since IIS7, you can't use both Forms Authentication and Windows Authentication in the same application.

Mike Volodarsky posted a workaround for ASP.NET to allow different pages to use different authentication schemes:
IIS 7.0 Two-Level Authentication with Forms Authentication and Windows Authentication[^]

However, that's unlikely to work with SharePoint, and it doesn't sound like that's what you want to do anyway.
F-ES Sitecore 26-Aug-15 9:52am    
Not easily as windows auth operates at a lower level than forms auth and will prevent access to your code before forms auth does its work. There are hacky workarounds if you google " mix windows authentication and forms authentication" and they seem to work, but you're pretty much breaking the architectural rules of .net so it's not straightforward.
Richard Deeming 26-Aug-15 9:55am    
Just found a blog post for SharePoint 2010 which claims you can do it:
SharePoint 2010 mixed Authentication[^]

And this one suggests it's still possible in 2013:
SharePoint 2013 Custom Claims (FBA) based Mixed Mode Authentication - Part 1[^]

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