You're good to go. Client authentication methods for ActiveSync are configured on this server '{0}'. You can modify this ...

You're good to go. Client authentication methods for ActiveSync are configured on this server '{0}'. You can modify this setting via PowerShell.  Example: 'set-ActiveSyncVirtualDirectory -Identity "'{1}'" -BasicAuthEnabled $true' or 'set-ActiveSyncVirtualDirectory -Identity "'{1}'" -ClientCertAuth Accepted' or both to enable authentication support.