<div>
<div class="content wysiwyg-content">
I'm using OWA in Chrome for access to my .mil email. &nbsp;Periodically, I receive a digitally signed or encrypted email that I can't read. &nbsp;The error message says &quot;This message has a digital signature. The digital signature couldn't be validated because the S/MIME control isn't available.&quot; So how do I install the S/MIME controls in OWA in Chrome?
</div>
</div>


I'm using OWA in Chrome for access to my .mil email.  Periodically, I receive a digitally signed or encrypted email that I can't read.  The error message says "This message has a digital signature. The digital signature couldn't be validated because the S/MIME control isn't available." So how do I install the S/MIME controls in OWA in Chrome?

Need to install S/MIME controls in Chrome for Outlook Web Access.

Chrome is a free web browser created by Google. Originally released in 2008, it has grown to become the most used desktop web browser (as of October 2016).

Chrome

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Web browsers are applications used primarily to display documents, files and media from the Internet, identified by a Uniform Resource Identifier (URI) that can be a page, image, video or other file. Some browsers require the use of add-ons or extensions to safely render the information they receive; others have systems built into them to perform the same functions.

Web Browsers

Chrome OS is an operating system based on the Linux kernel and designed to work with web applications and installed applications. Initially, Chrome OS was almost a pure web thin client operating system, with only a handful of "native" applications, but Google gradually began encouraging developers to create "packaged applications", some of which can work offline. App Runtime for Chrome (beta) enables Android applications to run on Chrome OS. Chrome OS is built upon the open source project called Chromium OS which, unlike Chrome OS, can be compiled from the downloaded source code; Chrome OS is the commercial version installed on specific hardware.