I'm exhausted from reading through threads on this topic, so I'm once again starting another one...

I once actually had the uploader work with me, after it failed to work and produced the following error:

"Given URL is not allowed by the Application configuration: One or more of the given URLs is not allowed by the App's settings. It must match the Website URL or Canvas URL, or the domain must be a subdomain of one of the App's domains."

I'm not sure what I did at the time, but it did finally connect to Facebook.  However, I'm stuck again.  I've checked ALL of the security settings on both Facebook and my windows outlook account, and all settings are original (i.e., no required login approval on FB, app platform in FB is ON, and two-step verification in Outlook is OFF.).

I don't care about mobile devices; I just simply want to use my desktop PC with Windows 8.1 and photo gallery 2012 to upload photos to Facebook.  I'm surprised it's mid-2015 and this seems to still be an issue!

Thank you.