Hi all, I've a strange problem: when I browse the intranet and I choose an https:// internal link, the request for the certificate on internet explorer is presented two times. It ask me the first time to add the certificate and then ask me another time. If I reach directly the internal page, it ask me only once I think it's related to a bad IIS configuration but it seems all ok

Hi, Do you mean that if you access the website such as https://hostName , you will get the certificate warning twice, but the problem does not happen when accessing the page directly such as https://HostName/owa? Please requested a new certificate for your IIS and see if the issue persists. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT