Only https links work. Never installed security software. Never messed with internet connection settings. Refreshed Firefox. No joy.
Firefox has been working like a dream for as long as I've had it - until two days ago. It suddenly stopped linking to http sites. Still works for https sites, though. This problem does not exist in Safari (but I prefer Firefox!).
Did some digging and can already tell you that: (1) no additional security software were ever installed. (2) No changes were made to the internet connection settings. (3) Wifi connection is strong and fully functional (as it has always been)
I followed the "refresh" procedure recommended on this forum - still no luck. I am the only person working on both devices mentioned below. They are not networked. They are only for personal use at home, or when traveling (the laptop).
iMac: Model 7,1 OS X (Snow Leopard) 10.6.8 (This Mac is too old to support higher versions) Memory: 1 GB
Have same problem on much newer MacBook Pro: OS X (Mountain Lion) 10.7.5 Memory: 4 GB
Valgt løsning
Do a malware check with several malware scanning programs on the Windows computer. Please scan with all programs because each program detects different malware. All these programs have free versions.
Make sure that you update each program to get the latest version of their databases before doing a scan.
- Malwarebytes' Anti-Malware:
http://www.malwarebytes.org/mbam.php - AdwCleaner:
http://www.bleepingcomputer.com/download/adwcleaner/
http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml - SuperAntispyware:
http://www.superantispyware.com/ - Microsoft Safety Scanner:
http://www.microsoft.com/security/scanner/en-us/default.aspx - Windows Defender:
http://windows.microsoft.com/en-us/windows/using-defender - Spybot Search & Destroy:
http://www.safer-networking.org/en/index.html - Kasperky Free Security Scan:
http://www.kaspersky.com/security-scan
You can also do a check for a rootkit infection with TDSSKiller.
- Anti-rootkit utility TDSSKiller:
http://support.kaspersky.com/5350?el=88446
See also:
- "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked
- https://support.mozilla.org/kb/troubleshoot-firefox-issues-caused-malware
Alle svar (2)
Since it is happening on more than one device, please make sure that it does not happen on the same network. This will tell you if it is the ISP.
In Firefox, does this happen in Safe Mode Diagnose Firefox issues using Troubleshoot Mode or a new profile Profile Manager - Create, remove or switch Firefox profiles
The new profile will eliminate any changed preferences without deleting the old profile and Safe Mode will tell you if its an add on or any settings.
Valgt løsning
Do a malware check with several malware scanning programs on the Windows computer. Please scan with all programs because each program detects different malware. All these programs have free versions.
Make sure that you update each program to get the latest version of their databases before doing a scan.
- Malwarebytes' Anti-Malware:
http://www.malwarebytes.org/mbam.php - AdwCleaner:
http://www.bleepingcomputer.com/download/adwcleaner/
http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml - SuperAntispyware:
http://www.superantispyware.com/ - Microsoft Safety Scanner:
http://www.microsoft.com/security/scanner/en-us/default.aspx - Windows Defender:
http://windows.microsoft.com/en-us/windows/using-defender - Spybot Search & Destroy:
http://www.safer-networking.org/en/index.html - Kasperky Free Security Scan:
http://www.kaspersky.com/security-scan
You can also do a check for a rootkit infection with TDSSKiller.
- Anti-rootkit utility TDSSKiller:
http://support.kaspersky.com/5350?el=88446
See also: