we have a series on monitors that check Intranet URLs every 30 minutes. We got an error this morning retrieving one of the URLs and the message back was "requires client certificate authentification".
The program didn't actually fail. Have a look at the URL that we use to do the check:
So, you can see by the HTTPS that is it certificate based but what would throwup the error? It is the same system that checks the URL all the time so i don't understand the failure?