Error Referer Not Found Firefox
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Firefox Editing Tools Article Discussion Edit Article Translate Article Show Translations What Links Here Show History Customize this article Firefox Version 51 Version 50 firefox referer control Version 49 Version 48 Version 47 Version 46 Version 45 Windows 8 Windows firefox referer spoof 7/Vista Windows XP Mac Linux Windows 10 Explore more topics Basic browsing Install and update Sync and save Chat and
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share Do more with apps Protect your privacy Manage preferences and add-ons Fix slowness, crashing, error messages and other problems Was this article helpful? Server Not Found - Troubleshoot connection problems If you
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have a problem connecting to a website, you may see error messages like Server Not Found. This article describes how to troubleshoot problems that cause this error. For troubleshooting other error messages, see Error loading websites. Table of Contents1 Try another browser2 No browsers can load websites3 Firefox cannot load websites but other browsers can3.1 Cannot load websites after updating Firefox3.2 Firefox connection settings3.3 DNS Prefetching3.4 internet explorer referer IPv64 Firefox cannot load certain websites4.1 Check for malware Try another browser To begin, try opening a website in another browser (such as Internet ExplorerSafariEpiphany or Chromium). If all other browsers cannot load the website, move on to the No browsers can load websites section. If the other browsers can load the website, skip ahead to the Firefox cannot load websites but other browsers can section. No browsers can load websites If neither Firefox nor your other browser can load websites, your problem is not in Firefox, so you should seek help elsewhere., for example, at Apple support:, for example, at Microsoft.com: (OS X 10.8 Mountain Lion): See If you can't connect to the Internet (OS X 10.9 Mavericks): See Solve problems with connecting to the Internet (OS X 10.10 Yosemite): See Solve problems connecting to the Internet (OS X 10.11 El Capitan): See Solve problems connecting to the Internet (Windows 10): See Why can't I get online? (Windows 8): See Why can't I connect to the Internet? (Windows 7): See Why can't I connect to the Internet? (Windows Vista): See Troubleshoot Internet connection problems (Windows XP): See How to troubleshoot home networking in Windows XP
websites. Error messages may include "The document contains no data" and "The connection was refused when attempting to contact..." or an error page may tell you that the server could not be found or that the
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connection has timed out. If you can't get any website to load immediately after server not found mac updating your browser, it is almost certainly your firewall or other security software blocking the connection. Contents 1 Error loading any website server not found virus 2 Only Mozilla applications are having problems 2.1 Connection settings 2.2 Firewalls 2.3 Other security programs 2.4 IPv6 2.5 DNS prefetching 2.6 Accessing a router 2.7 Session expired 3 All programs are having problems 3.1 https://support.mozilla.org/en-US/kb/server-not-found-connection-problem Diagnosing Windows network connections 3.2 Router configuration 3.3 Viewing system logs 3.4 DNS 3.5 Are others also experiencing problems 3.6 ISP 3.7 Spyware and other malware 4 Error loading some websites 5 Websites randomly do not load 6 See also 7 External links 8 Related bug reports [edit]Error loading any website If Firefox/Mozilla Suite/SeaMonkey will not connect to any website: As with anything else, the problem may go away once http://kb.mozillazine.org/Error_loading_any_website you reboot your system. Make sure you are connected to the Internet. If you use dial-up and want your Mozilla application to automatically connect when you start it, see Autoconnect. Make sure that File -> Work Offline is not checked. For specific connection or page load issues, see the section below that best describes your problem. [edit] Only Mozilla applications are having problems If your Mozilla application can't connect to websites but other programs such as Internet Explorer can... [edit] Connection settings Make sure your connection settings are correct. If you have Internet Explorer and it works, compare Internet Explorer's connection settings (e.g., Control Panel -> Internet Options -> Connections: LAN) to those of Firefox (Tools -> Options -> Advanced -> Network / Connection -> Settings) or Mozilla Suite/SeaMonkey (Edit -> Preferences -> Advanced -> Proxies). If your connection settings are not correct but any changes you try to make are not saved after restarting your Mozilla application, make sure you don't have a utility program such as "Hide IP Platinum" that modifies your connection settings. Even if the utility is no longer installed, the user.js file may still contain the modified settings [1]. To resolve this problem, open the profile folder and look for a user.js file. If found,
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings http://stackoverflow.com/questions/6880659/in-what-cases-will-http-referer-be-empty and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it not found only takes a minute: Sign up In what cases will HTTP_REFERER be empty up vote 85 down vote favorite 32 I know it's possible to get an empty HTTP_REFERER. Under what circumstances does this happen? If I get an empty one, does it always mean that the user changed it? Is getting an empty one the same as getting a server not found null one? and under what circumstances do I get that too? php security http http-headers share|improve this question asked Jul 30 '11 at 2:12 sameold 3,891113966 8 When the client doesn't send one. –Ignacio Vazquez-Abrams Jul 30 '11 at 2:14 add a comment| 4 Answers 4 active oldest votes up vote 144 down vote accepted It will/may be empty when the enduser entered the site URL in browser address bar itself. visited the site by a browser-maintained bookmark. visited the site as first page in the window/tab. switched from a https URL to a http URL. switched from a https URL to a different https URL. has security software installed (antivirus/firewall/etc) which strips the referrer from all requests. is behind a proxy which strips the referrer from all requests. visited the site programmatically (like, curl) without setting the referrer header (searchbots!). share|improve this answer edited Sep 4 '13 at 17:11 answered Jul 30 '11 at 2:16 BalusC 683k20824782695 19 You might want to add "when the user transitions from a secure (HTTPS) page to an insecure one"