How to redirect OWA to https, Microsoft Exchange 2010

What:

Windows 2008 R2 with Microsoft Exchange 2010

Problem:

Users can't access webmail (OWA - Outlook Web Access), they are getting error 403.4 and complain...

Solution:

To access Outlook Web Access users should use link starting with https://, but people are used to just type in an address and hit enter, which will default to http and produce 403.4 error message.

Redirect http to https:
==================================
1. Open IIS Manager and navigate to the level you want to manage (Default Web Site).
2. In Features View, double-click "Error Pages".
3. Click Add...

 - Use 403.4 as a status code
 - Respond with a 302 redirect

• https://mail.example.com/owa

This might require an IIS restart, Stop/Start service from Manager or use command line to do it.

Start > cmd

iisreset /noforce