This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Capability of S/MIME support for OWA on Firefox

ian.hawkins
ian.hawkins
more options

Hello Firefox! I wanted to understand if there is a way for a user to login to Outlook WEB ACCESS. If you login to OWA on Firefox, is there a capability to have S/MIME active?

I have researched that this is possible on EDGE, and did some research on Google to see if this is common.

Would there be a FAQ or guide on this topic?

Hello Firefox! I wanted to understand if there is a way for a user to login to Outlook WEB ACCESS. If you login to OWA on Firefox, is there a capability to have S/MIME active? I have researched that this is possible on EDGE, and did some research on Google to see if this is common. Would there be a FAQ or guide on this topic?

All Replies (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
more options

Hi Ian, it looks like you need an add-on from Microsoft to use S/MIME in your browser. If they have an add-on for Firefox, it appears to be a well-guarded secret.

Well, maybe it doesn't exist. The following article says:

S/MIME in Outlook on the web in Exchange 2019 is supported in Internet Explorer, Edge, Edge with Chromium, and Google Chrome.

https://learn.microsoft.com/en-us/exchange/policy-and-compliance/smime/smime-settings-for-owa?view=exchserver-2019