If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly. See "Firefox connection settings":

Check the proxy settings to make sure that they are correct. Contact your network administrator to make sure the proxy server is working. My Pc had a virus, and trend helped me remove it, but now every time I sign on to Fire Fox the fallowing notification appears The proxy server is refusing connections Firefox is configured to use a proxy Search for “Proxy” using the Search bar (3) (or you can scroll down to “Network Proxy”) and click on “Settings…” (4). Check the “Manual proxy configuration” checkbox (5).In the “HTTP Proxy” field (6) type the IP address of a CactusVPN server. In the “Port” field (7) type the port number supported by CactusVPN. Jun 09, 2020 · Below “network.proxy.http” type the server name into the box. Under “network.proxy.http_port” type the port number into the box. Simplifying the process. To make using Firefox even easier, add an extension like FoxyProxy. FoxyProxy automatically switches an Internet connection across one or more proxy servers based on URL patterns. Firefox proxy settings: Open Firefox on your computer. Click on the ☰ icon > Options (or Preferences on a Mac OS X) Click the General tab. Scroll down to the Network Proxy section and click Settings. Check the Manual proxy configuration box. Type your address (e.g.: us.smartproxy.com) and port (e.g.: 10101) under HTTP >Check the Use this Nov 05, 2018 · Configure proxy on Firefox for Android. #five That’s all now the firefox proxy settings can be configured for your browser so it’s essential to suggested to return to the homepage of the browser. That is what all you wish to have to do and there are not any installations or adjustments required to the gadget for a similar! Manual Firefox Proxy Settings. Step 3: Here we are going to use the ‘Manual proxy configuration’ to configure Firefox proxy settings: Enter the proxy server address in ‘HTTP Proxy’ and port number as shown below. This will be different for every person. Below is just an example to do it.

Setting the Proxy. Open the Firefox Menu and select Options. In the Options window click on the Advanced icon. Select the Network Tab. In the Connection section click the Settings button

Firefox connection settings If you connect to the Internet through a proxy server that is having connection problems, you will not be able to load websites. Click the menu button and select Options.

Nov 02, 2005 · Initially, proxy servers were used for access control and performance. Many networks had limited access to the public network via proxy servers. Because the public network was small in scope and connections were slow, a caching proxy could often improve the overall performance.