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.

Separate Issue; Your System Details shows;

Installed Plug-ins

Adobe PDF Plug-In For Firefox and Netscape 11.0.10 Adobe PDF Plug-In For Firefox and Netscape 15.10.20056
Having more than one version of a program may cause issues. You must remove the older programs. Then get the current full installer.

Warning, the older programs has security issues.

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

I deleted all of and restarted from fresh and I still get the message there is no way 1 second logging into Facebook would they know I have malware. yet I can log in through Comodo Ice Dragon and Chrome Fine no message so this tell me that they have a Block or something on Firefox

Try to contact their support.

https://www.facebook.com/notes/facebook-security/malware-checkpoint-for-facebook/10150902333195766

Read the people responses

FredMcD said

Try to contact their support.

I did over a day ago Nothing and many others are reporting the same no response.

This issue can be caused by corrupted cookies or cookies that are blocked.

• check the permissions in "Tools > Page Info > Permissions"

You can try these steps in case of issues with web pages:

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

• Hold down the Shift key and left-click the Reload button
• Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
• Press "Command + Shift + R" (Mac)

Clear the cache and remove the cookies from websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).

"Clear the cache":

• Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove the cookies" from websites that cause problems.

• Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

• Switch to the DEFAULT theme: "3-bar" menu button or Tools > Add-ons > Appearance
• Do NOT click the "Refresh Firefox" button on the Safe Mode start window

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Ok I tried all that Nothing I still get the message

I went Scorched Earth and wiped out and removed and deleted all my folders of fire fox I reloaded it from start.

There is nothing in permissions toggling the options that worked

Yes I tried safe mode two times before I refreshed FF and still got the Message. The fact I am able to log in on Chrome and Comodo Ice Dragon fine tells me they Firefox.

Why??? I tried logging in with a totally separate computer which I just loaded Firefox on and got the same message. I do not have malware and Never did they are Doing this forcing people to buy malware software.

Create a new profile to test if your current profile is causing the problem.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox