Sorry, this seems more simple than I am making it to be but I am just running into multiple errors after reading and trying multiple articles. So after my initial installation of Sitecore, my certs have expired, I have tried creating just one self-assigned cert and then assigning it to my site app pool, which will allow my site to run even though I still get the site isn't secure and passes it on to the unsafe site, however when I try to get to my local Sitecore tree I can NOT get my login page to load up with these certs. I just get the below error.
HTTP Error 403.16 - Forbidden Your client certificate is either not trusted or is invalid.
I don't know if I need to update the
xconnect, and reg app pool with the new cert and then update all the thumbprints or what I need to really do. None of the articles really hit my points, trying to look for help to have the exact walk-through I need. So unsure about thumbprints and if I need to delete the other expired certs, etc.