Has anyone made any progress with this? I'm having the same issue...
Nopcommerce 3.30 works on my local development PC but I'm getting a redirect loop when running it on our server: login -> install -> login -> install etc. I've installed .NET 4.5.1 on our server (Windows Server 2012) but no luck.
For anyone that has a similar issue in the future:
My problem was that I hadn't enabled Anonymous authentication in IIS - this hadn't caused an issue when installing previous versions of Nop, but in 3.30 this causes a constant redirect to login and then back to install.
Hi Guys, I was getting this in certain product pages in my applicatiion. I was able to fix this by changing the Search engine friendly name for the product to something unique (there was duplicate slugs in the DB)