Hello,

Try Firefox Safe Mode to see if the problem goes away. Firefox Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).

If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:

• Click the menu button , click Help and select Restart with Add-ons Disabled.

If Firefox is not running, you can start Firefox in Safe Mode as follows:

• On Windows: Hold the Shift key when you open the Firefox desktop or Start menu shortcut.
• On Mac: Hold the option key while starting Firefox.
• On Linux: Quit Firefox, go to your Terminal and run firefox -safe-mode
  (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)

When the Firefox Safe Mode window appears, select "Start in Safe Mode".

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.

To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

When you figure out what's causing your issues, please let us know. It might help others with the same problem.

No apparent change was observed in Safe mode. Except that it disabled the menu and bookmark bars. The redirection problem on Amazon remained unchanged.

Separate Security Issue: Update your Adobe Reader Version 2015.016.20039 Note: Other Software is offered in the download.

Many site issues can be caused by corrupt cookies or cache.

• Clear the Cache and

• Remove Cookies
  Warning ! ! This will log you out of sites you're logged in to.

Type about:preferences<Enter> in the address bar.

• Cookies; Select Privacy. Under History, select Firefox will Use Custom Settings. Press the button on the right side called Show Cookies. Use the search bar to look for the site. Note; There may be more than one entry. Remove All of them.
• Cache; Select Advanced > Network. Across from Cached Web Content, Press Clear Now.

If there is still a problem, Start Firefox in Safe Mode {web link} A small dialog should appear. Click Start In Safe Mode (not Refresh). While you are in safe mode;

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.

Poke around safe websites. Are there any problems?

Then restart.

I am sure that I tried all of this already, but just to be sure, I foolowed your instructions (again). Sorry, no change was observed. Redirection issue still happens on Amazon. As for the Adobe add-on... I should just disable it, I don't use it.

Hmmmm... I couldn't find Adobe Reader in add-ons. Are you sure I am using it in Firefox? If so, how can I disable it? I know that I used to use it to read library books, but I have not used it in a long time -- hence out-of-date, as you noted. Perhaps I should just uninstall it.

Adobe software is listed under plugins.

Start your Computer in safe mode with networking. Then start Firefox. Try Safe websites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia

FredMcD said

Adobe software is listed under plugins. Start your Computer in safe mode with networking. Then start Firefox. Try Safe websites. Is the problem still there? Starting The Computer In Safe Mode;
Free Online Encyclopedia

I don't see Adobe Reader under plugins or add-ons. I have Adobe Acrobat, but that is not the same as Adobe Reader. Adobe Reader is an ebook program that is installed on my computer, unused for a long time, because I no longer borrow from the public library.

I have tried Safe mode several times, no change in the Amazon redirection issue.

Start your Computer in safe mode with networking. Then start Firefox. Try Safe websites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia

You may have ad / mal-ware. Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

FredMcD said

Start your Computer in safe mode with networking. Then start Firefox. Try Safe websites. Is the problem still there? Starting The Computer In Safe Mode;
Free Online Encyclopedia

---

You may have ad / mal-ware. Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

Okay, I guess I have tired of this. Perhaps I am the only one with this issue, or few others have it. I have decided to fall back to my stable configuration -- running Chrome. It works and I need to do productive work. I will retry Firefox at a later date.

Alright, I gave Firefox another shot, I really do not want to use Chrome. So on the off chance, I opened a "private window" and manually logged into the Amazon site. Everything worked!!

So what is different about a private window? Why would it work there, but not in a regular window? Is it that tracking is disabled in a private window? Can I turn off tracking in a regular window? Maybe that would work? Lots of questions... guess I will give it a try.

Is there a downside to turning off tracking in a regular window?

Well, the tracking isn't the problem. I set "Do Not Track" in regular Firefox windows and still the redirection failed there.

So why would this work fine in a "private window" and not in a regular window? Besides the Do Not Track what else is different that might have an effect? I know, cookies are treated differently.

Am I stuck using "private windows" for Amazon shopping?

I have this exact issue. It started 5/23 or 5/24. I have tried most of these solutions without and sucess. Someone at Mozilla needs to run this down.

I have used Amazon and had no problem. I've called the big guys to help you. Good luck.

FredMcD said

I have used Amazon and had no problem. I've called the big guys to help you. Good luck.

Thank you.

Please bear in mind, not all links at Amazon fail. A large number of links work just fine for me. Obviously, the broken links require redirection... and the working links do not. But still, that can't be the whole answer... because not all the links fail.

Did you try the link I showed in the first message above? It fails consistently for me, except in "private" windows.

I tried both links with no problem.

Right now if I use the Private window Amazon works normally. If I try to use the normal window I get the Firefox window stating a redirecting issue. So until there is a fix I will just use the private window. I hope a resolution will be coming.

Please bear in mind, not all links at Amazon fail. A large number of links work just fine for me. Obviously, the broken links require redirection... and the working links do not. But still, that can't be the whole answer... because not all the links fail.

Did you try the link I showed in the first message above? It fails consistently for me, except in "private" windows.

I agree with the above explanation. This is exactly what I experience. Curious this all started just this week.

I'm having the same issue with Amazon, including the fact that it works fine in a private window. Thought I was losing my mind and relieved that I am not the only one with this weird issue.

But I'm only having this issue on one machine (Fx 46.0.1, Win 8.1). On two other machines (Fx 46.0.1, Win 7), all is well. Comparing the Firefox-Amazon behavior on these three machines, I think I’ve found what’s wrong, but I don’t know why it is happening or how to fix it:

On the machines that work right, when I visit the main Amazon page while logged on (either from bookmark, Google, or typing), I end up at http://www.amazon.com/. From there if I click shopping cart or order history I go to a secure (https) page. From there if I click a product page, I get an unsecured (http) page. If I visit a product page directly from Google (whether logged on or not), I get an unsecured (http) page.

However on my problem machine, every Amazon page comes up https including the home page, and nothing I do can change that. If I hard-type www.amazon.com, I am taken to https://www.amazon.com/. Pages that are supposed to be secure (like shopping cart, order history, etc.) work fine, but the product pages, which normally would have http links instead show https links and they cause the redirect error; manually changing the address to http results in the browser sitting there “Waiting…” (as does trying to access a product page directly from Google).

It seems the https versions of those pages don’t exist or don’t work right, but why does this Firefox now demand them? What has changed to cause this behavior since last week (when I know things worked properly)? I’ve gone through every conceivable setting (including anything coming up as non-default in about:config) and came up empty.

I am experiencing the exact problem. I am not able to make any progress in solving this issue. I cant believe there is not a simple fix for this.

lindaandron said

I am experiencing the exact problem. I am not able to make any progress in solving this issue. I cant believe there is not a simple fix for this.

The simple fix... I am using "private window" for all my Amazon shopping. It is becoming 2nd nature by now, I just open it automatically.