Firefox seems to be blocked from/with DNS access, but only on one network.
When I try to access https web pages in firefox I get (Firefox can't establish a connection to the server at www.google.com.). This does not affect any other browsers, nor is it encountered on any other networks. I've tried google dns, and fresh installs. This is a public wifi network, so I cannot modify their network. I believe that firefox is being blocked on the router, but I do not understand how that would work, or how to avoid it (other than use chrome). I prefer firefox and it's add-ons though. I've even tried modifying the user-agent with limited success. I do not want to use tor or a proxy.
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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:
FredMcD, the error says nothing about a certificate, plus I scoured the internet looking for a solution (trying any that would not harm my pc), plus it is only one network.
Cor-el, This problem happens on a clean install. I installed windows fresh on a laptop, downloaded firefox, installed it, and there was the error. I'll try looking for malware (already have malwarebytes installed).
I think firefox itself is being targeted on the network (unsure how), because I changed the user-agent to a google bot and accessed google (but nothing else). Wondering what else id's firefox. Also I didn't want to say this, (because people hate torrents), but if any program even looks like a torrent protocol; every connection in firefox is unable to connect (but other browsers are unaffected).
Even download manager programs are affected, but other browsers are unfazed.
PlanetKiller said
Also I didn't want to say this, (because people hate torrents), but if any program even looks like a torrent protocol; every connection in firefox is unable to connect (but other browsers are unaffected). Even download manager programs are affected, but other browsers are unfazed.
I have downloaded many torrents thru Firefox. Seldom is there a problem.
Did you use all of the mal-ware scanners above?
Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.
I use utorrent for my torrent program. Also I recently wiped and re-installed windows and firefox on a laptop and had the same problem.
Furthermore, it only happens on one wireless network, I've never encountered this problem on any other network. That's why I think firefox is being partially blocked exclusively. I'll continue going through the malware scanners, but I haven't found anything yet.
What network, and who owns it?
Some private, semi-private WiFi may have blocks for whatever reason.
Hardees' (a fast-food restaurant).
I have been using CurrPorts (great) to monitor the network. It seems that chrome and IE use different remote ports and FF, along with other programs use default ports of 80 and 433, along with a few others. If I could find a port proxy for my computer, or route network traffic through chrome ...