So I've tried various things to set this cookie to true for httponly and secure. This includes following the steps detailed at https://aspnetzero.com/blog/http-only-anti-forgery-token-in-asp.net-zero. When I try to implement this we get the following error: System.ArgumentException: An item with the same key has already been added. Key: X-XSRF-TOKEN
There are also a few other support posts about this issue, but none of them seem to provide a proper solution to this issue.
Please note that we are using the .Net Core MVC/Jquery framework. Let me know if you require any additional information.
Thank you.