Basic authentication

Basic authentication must be allowed for the Exchange web services, only on https. In a default Microsoft Exchange Server configuration, basic authentication is allowed.

To enable Basic Authentication on Exchange Server 2007 and 2010:
1. Run this Exchange command:
```
Set-WebServicesVirtualDirectory -Identity * -BasicAuthentication $True
```
  There is no GUI equivalent to set the Authentication.
2. To confirm that Basic Authentication is enabled on the Exchange web services, run this command:
```
Get-WebServicesVirtualDirectory |FL
```
3. Verify that the BasicAuthentication parameter has the value ‘True’.
  
  See http://technet.microsoft.com/en-us/library/aa997233(EXCHG.80).aspx.
To enable Basic Authentication on Exchange Server 2013 and later:
1. Open the Exchange admin center and select servers > virtual directories.
2. Edit the EWS (Default Web Site) entry and ensure that Basic authentication is selected.
3. Save the changes.