Windows 10 IE 11 S/MIME Issues with OWA.

J

jeremynickel

I had posted a response to a question about this topic back in April 2017 and since the post is locked, I wanted to pass on some updated information for those that me require it. I'm posting those same steps as before but have added an additional step which is to install the latest DoD Root Certificates.


I resolved this issue with opening digitally signed and encrypted emails with OWA on Windows 10 using IE 11 by performing the following steps.

1. Download the InstallRoot utility from DISA IASE and install the latest DoD Root Certificates.

2. Open 32 bit Internet Explorer.

3. Click the gear icon located on the top right corner of the browser.

4. Select Safety menu and then turn on ActiveX Filtering by selecting it.

5. Click the gear icon again.

6. Select internet options.

7. Select security, trusted sites, and then click the sites button.

8. Add the URL of your OWA to the trusted list. i.e. https://osan.mail.us.af.mil

9. If you have issues sending emails, you may need to add an underlying URL, like https://web.mail.us.af.mil. or https://web.mail.mil. This step was not required for me, but may be required for others.

10. Navigate to your OWA site.

11. At the top of the URL bar, you should see a circle with a diagonal line through it.

12. Click that circle and then click Turn Off ActiveX Filtering. If you don't do this for the OWA site, you will not be able to download, or use S/MIME.

13. Verify S/MIME is installed by going to the OWA options, see all options, settings, S/MIME.

14. Download and install if required, otherwise you should see the two checkboxes for sign and encrypt.

15. A final step if you are still having issues would be to add site to your compatibility view options. I did not have to perform this step.

16. After performing all of these steps, close your browser and reopen for changes to take effect.



Hope this helps!



Jeremy Nickel

Plans and Programs Flight Superintendent

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