Cookie Authentication expiring too soon in ASP.NET Core

Question

I have a ASP.NET Core 1.1.2 project in which I am using cookie authentication. I am having a problem where users are being prompted to log back in after being idle for an h

Answer 1

users are being prompted to log back in after being idle for an hour or less, and loosing work.

I have similar configuration, but it works fine for me.

One thing I can think of is you cannot let web server idle for 20 minutes. IIS's app pool default idle time-out is 20 minutes (I could not say for other Linux web server).

So you could either set longer app pool time-out (0 for infinity), or ping every 5 minutes from external service like Monitis.