See:

• http://kb.mozillazine.org/The_page_is_not_redirecting_properly

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.org/kb/Safe+Mode

Do a malware check with some malware scanning programs on the Windows computer.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

• http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
• http://www.superantispyware.com/ - SuperAntispyware
• http://www.microsoft.com/security/scanner/en-us/default.aspx - Microsoft Safety Scanner
• http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
• http://www.safer-networking.org/en/index.html - Spybot Search & Destroy

You can also do a check for a rootkit infection with TDSSKiller.

• http://support.kaspersky.com/viruses/solutions?qid=208280684

See also:

• "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

Tried everything above and nothing worked. I didn't think it would though, this is a fresh install of windows 7 with very little installed. I didn't expect to find any malware/virus. The only thing detected was some adware but removing those did not solve the problem.

Edit: Uninstalling and Reinstalling firefox did not work either. Edit2: I originally deleted all cookies associated with google and that did not work. I went back and deleted all cookies and it now works. Sorry I do not know which cookie was causing the problem though.

I was able to enter Gmail by deleting the 's' on the end of http in the long form redirect URL. This is by far not a solution and it is very odd considering that I use Firefox at home and at work, this problem only occurs at home.

Top of your browser click on Firefox, select Options

Select "Use Custom Setting for History"

Then click show cookies, then remove All Cookies

Close browser and restart, should work nicely

Simple fix (cause of the problem, since you select copy Cookies and History, Favs from Explorer they are clearly not compatible, so that is why you get the error)

Firefox guys need to fix this is serious challenge for new users.