We upgraded NPM to 10.3 about a week and a half ago. Since then, when we get an alert that should contain a page showing a table of device poller data, we get the login page. We're set for integrated authentication but it was working fine before the upgrade. I even tried removing the site and running the config wizard again and still nothing. Any thoughts before I open a ticket?
I ended up opening a support case. I had to add &AccountID=Guest to the URL to get it to email properly. I'm not 100% sure what changed but it works for now.