This page is updated with information on Exchange 2016 and Exchange 2019.

A long time ago, Jeff Guillet wrote an excellent post on his EXPTA {blog} on how to brand the OWA logon page in Exchange 2007 and Exchange 2010, which is perfect when testing load balancing solutions. You can find this post here: http://www.expta.com/2010/03/how-to-brand-owa-2007-and-2010-with.html.

For testing OWA in Exchange 2013 and higher, the process is somewhat similar. On the Exchange 2013 Client Access server or Exchange 2016/2019 Mailbox Server, navigate to the C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\owa\auth directory and open the logon.aspx page with (for example) Notepad. If you are running Exchange 2019 on Windows Server Core you can use the following command:

Notepad “C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\owa\auth\logon.aspx”

In this file, scroll down to the div class=”logonContainer” section and add the servername text just before the UserNameLabel variable, as shown in the following screenshot (click to enlarge)

Save the file and in your browser navigate to the Exchange Server to see the results:

Warning. When upgrading to a new CU, the logon.aspx is overwritten and you have to make these changes again.

And another warning…. I’m not so sure if this is fully supported by Microsoft 😊

Last Updated on February 27, 2019