We are moving to a new Windows Server 2022 and when using Swagger, some users are experiencing a popup window asking for username and password when trying to run an operation. Others are able to run the exact same operation without getting the popup. Doesn’t seem to matter as to Chrome / Edge, both of which are current versions.

If the user enters a valid U/P the operation completes without issue.

As best as I’ve been able to determine all the settings are the same between the servers.

Anyone have any ideas? Searched but haven’t come up with anything worthwhile.

ASP.NET Core 6 Web API, hosted in IIS