After Installing ADFS 3.0 on a Windows Server 2012 R2 the ADFS Server could not be reached.
While testings https://fs.contoso.com/adfs/ls/IdpInitiatedSignon.aspx the following error was displayed
Please turn on TLS 1.0, TLS 1.1 and TLS 1.2 in Advanced settings
Even though this was turned on in Microsoft Internet Explorer, also the Chrome browser could not connect to the ADFS Server.
The same error appeared while testing from the ADFS server itself. The ADFS Logon page was reachable when localhost was used instead of the FQDN.
In ADFS Powershell, when running the Get-AdfsSslCertificate Cmd-let the following was showed.
Restart the ADFS service and check for hostname warnings in AD FS > Admin eventlog
https://fs.contoso.com/adfs/ls/IdpInitiatedSignon.aspx was now correctly published
