Click the Library button , click History and select Clear Recent History….If you find that Firefox can load some websites but not others, first clear your Firefox cookies and cache: Select true when prompted to set the value and click OK.In the Enter the preference name field, enter dns.disablePrefetch and click OK.Right-click in the list of preferences, select New, and then select Boolean.disable IPv6 to set its value to true.įirefox attempts to speed up loading new websites by using DNS Prefetching, which can cause page load errors with some system configurations. In the list of preferences, double-click dns.In the Searchfield, enter dns.disableIPv6.Click I accept the risk! To continue to the about: config page. The about: config “This might void your warranty!”warning page may appear.In the address bar, type about: config and press Enter.Mozilla Firefox can’t load websites IPv6įirefox supports IPv6 by default, which may cause connection problems on certain systems. If you find that changes you make to your Firefox connection settings are not remembered when you restart Firefox. Close the about: preferences Any changes you’ve made will automatically be saved.If you connect to the Internet through a proxy, compare Firefox’s settings to another browser’s (such as Internet Explorer - see Microsoft’s guide to proxy settings).If you don’t connect to the Internet through a proxy (or don’t know whether you connect through a proxy), select No Proxy.In the Network Proxy section, click Settings….In the General panel, go down to the Network Proxy.Click the menu button and choose Options.To check your connection settings in Firefox: If you connect to the Internet through a proxy server that is having connection problems, you will not be able to load websites.
In general, you should make sure your Internet security software is up-to-date and remove Firefox from your program’s list of trusted or recognized programs, then add it back. If you were able to load websites until you updated Firefox or until your Internet security software was updated, reconfigured or a new one was added, your Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more) is likely preventing Firefox from connecting to the Internet.
Internet Security software blocking Firefox in Maine