I have the project configured (frontend in angular, backend in net core with ef). When I log in, everything works fine. After each deploy in IIS for the front, when I try to go to the website, the site is stuck with the spinner in the middle of the screen. The browser console won't throw any error message. When I try going to the website using an incognito instance, I have no problems at all. And I just realized that, to solve the problem in my regular browser instance, I have to remove the website cookies and reload the page and then it works fine. I had some other people trying this from their machines and have the same problem.