Image Upload using Flash is not working in Firefox. It works in IE and Chrome on the same system.

The usual error "ssl error invalid or self-signed certificate" appears. I tried to debug it with Fiddler, but there is either no request made at all, or a HTTP CONNECT is shown but no data sent.

I tried on different sites, all Magento 1.9+ (one, with different Certificates (from StartSSL and Comodo). The problem is on all of them with Firefox 40 and 41.0b8 an OS X and Windows. Flash Player version is "" on all devices.

On all of this devices, the Upload works with Chrome and IE/Safari.

The Qualys SSL Test gives A or A+ for all sites.

2 Answers 2


Actually Firefox stopped supporting Flash (http://www.computerworld.com/article/2948012/security/adobe-flash-must-die-firefox-facebook-itbwcw.html)

Tobias Renger already made a no-flash uploader you get can from Github which works well.


  • 5
    Google chrome also stopped supporting flash. If it still works, wait for the next upgrade: dailymail.co.uk/sciencetech/article-3160644/…
    – Marius
    Sep 10, 2015 at 8:57
  • Actually, the extension was made by Tobias Renger, not by Openstream. Sep 10, 2015 at 9:05
  • Thanks. The extension seems to work fine. Still strange why flash won't even open a SSL connection in firefox but works fine in other browsers...
    – Josef
    Sep 10, 2015 at 13:58

Make sure your web browser uses flash, the image uploader in Magento uses flash witch is no longer active in the most up-to-date web browsers.

To fix this there are two options:

Option 1:

Install a non flash upload plugin like the one below:


Option 2:

Install flash on your machine, the downside to this solution is that you will need to install flash on every machine you or your clients use to upload images.

That's why option 1 probably is the better solution.

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