Now what? Now when I start ArcMap or ArcCatalog 10.6 on my Windows 10 PC, I get multiple messages of "This page requires a secure connection which includes server authentication. The Certificate issuer for this site is untrusted or unknown. Do you wish to proceed?" Did I change something in IE on this machine to access my new installation of Portal on a LAN without a domain or cert. authority that causes this error in Desktop? Where do I find this in the Desktop docs?