Outlook Web App won't function correctly if you remove the Exchange Web Services virtual directory "{0}". To disable Exchange ...

Outlook Web App won't function correctly if you remove the Exchange Web Services virtual directory "{0}". To disable Exchange Web Services without blocking access to Outlook Web App, you can use "Set-CASMailbox -Identity  -EwsEnabled:$false" or "Set-OrganizationConfig -Identity  -EwsEnabled:$false".