Exchange 2016 ActiveSync error

Question

I'm trying to verify if all Exchange virtual directory are configured properly and running.

I try to use Browser to surf https://hostname.company.com/Microsoft-Server-ActiveSync, however it returned error http 505

enter image description here

Answer 1

Go into IIS and under the Active Sync virtual directory, under the Proxy sub directory, add the Negotiate provider within Windows Authentication. Similar thread for your reference.

You can also remake Active Sync Web Site and reconfigure ExternalURL and SSL Settings, using Remove-ActiveSyncVirtualDirectory and New-ActiveSyncVirtualDirectory, according to this similar issue.