Windows authentication: HTTP ERROR 500

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1

Hello,
We’ve just started to enable windows authentication on our instances, and I can’t figure out how to make it consistently work. Indeed, SSO is not working at the moment, but i manage to get a windows’ login popup, upon logging in everything is working fine. But if i restart the browser, i can’t get to the page anymore, and get error 500. The log contains
System.InvalidOperationException: An anonymous request was received in between authentication handshake requests.

It turns out I get the popup again if I clear the browser’s cache.

I’ve created SPN entries for the service account running PSU (it is a group managed service account).

We’re running version 4.0.10.

I’m a clueless for now… there seem to be way to run PSU in an IIS setup, perhaps that would be advisable?

2

FYI, manage to sort this out by confirming windows authentication was on in the appsettings.json. there was no mention of authentication in it, adding the authentication.ps1 alone didn’t work