hi HansvanderBoom, are you running "trusteer" software on your device by chance? it has been identified as a cause for many upload issues recently... see https://support.mozilla.org/en-US/questions/1102907 for example.

As a matter of fact I do and it doesn't run on the other browsers, so that might well be it. Gonna test it! Thank you very much, Philips!

hi again, trusteer has released an update in the meantime that should address the issue. could you please check for us, that on the latest version of trusteer (here's how to update: http://www.trusteer.com/User-Guides/R.../333.htm) there is no longer a problem with uploading files even when trusteer is active and get back to us with this info?

thanks a lot!

Philip, that doesn't help because I don't have that version of Trusteer. My version I got through my bank (Dutch ING) and it doesn't even have the same console. I have contacted Trusteer and made/got a ticket for the problem. My version says I am on the most up-to-date version: version 3.6.1507.53 Configuration 2535603 Origin ingnl

Add from received mail:

Dear Hans,

Thank you for contacting Trusteer Technical Support.

The issue you have reported is currently being investigated by our company experts and we expect it to be resolved in a future release of Rapport.

Thank you for your patience.

Should you need additional assistance, feel free to contact us by submitting the following form: http://www.trusteer.com/support/submit-ticket We also have helpful information available in our FAQ: http://www.trusteer.com/support/faq

Sincerely,

Kfir L Tier 1 Support Representative Trusteer, IBM Security Systems

01/14/2016 03:30:23 PM EST [Salesforce.com System User]

Please fix Trusteer so I can keep using Firefox for uploading photo's and such to various web based applications.

ok, the information we were getting is that this problem should be fixed with rapport version 3.5.1507.104 - but it may be that customized versions by particular banks are a bit slower to receive updates then...