This evidently happened a couple of days ago . My firefox, which is always up to date, suddenly stopped displaying many websites. The problem was the appearance of a fu… (ulteriori informazioni)
This evidently happened a couple of days ago . My firefox, which is always up to date, suddenly stopped displaying many websites. The problem was the appearance of a fully BLANK page. After quite a bit of investigation, including a couple of uninstall/reinstall cycles, I realized that all the pages causing problems were trying to perform a redirection using a meta refresh tag. The info on the support site (here) said this was related to the browser configuration, but I had the configuration tag appropriately set false (the default value, which *allows* redirection). I actually tried setting it to true, and, curiously, when I did that I then got the browser message saying the redirection was blocked, and when I clicked on "allow" it went thru! To make a pretty long story a bit shorter, the problem turned out to be the OFFICIAL AMAZON FIREFOX EXTENSION--which was updated on Dec 10. When I removed that extension and restarted my firefox, everything started working properly again. I have notified Amazon of the problem, but I figured that it would be important to post this notice here, as well, since I presume other users are probably having the same problem.
If you are seeing this issue (and your "blockautorefresh" config parameter is properly set to false), click on the tools menu (upper right, horizontal bars), and choose "add-ons." On that screen, open the Extensions tab. If it shows the "official Amazon firefox extension" you need to remove that. It did not tell me to restart the browser at that point, but I did, just to be sure. That fixed the problem.
For the record, I'm running Windows 7, 64-bit OS, with service pack 1. And my firefox is up to date with version 42.0.