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Unable to get online on Firefox

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I made a couple changes on my Firefox browser in the last few days and I am unable to get online anymore. I made one change to allow Firefox to use information to help improve their product and I also accepted a Bing addition to Firefox which I later removed.

I just want it to work again, but I don't know what to change or what to do.

I made a couple changes on my Firefox browser in the last few days and I am unable to get online anymore. I made one change to allow Firefox to use information to help improve their product and I also accepted a Bing addition to Firefox which I later removed. I just want it to work again, but I don't know what to change or what to do.

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above... allowed Firefox to use information to help improve their product, and I also accepted a Bing addition to Firefox

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If you connect to the Internet through a proxy server that is having connection problems, you will not be able to load websites. To check your connection settings in Firefox:

Click the menu button Fx89menuButton and select Settings. In the General panel, go down to the Network Settings section. In the Network Settings section, click Settings…. Change your 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. 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). Close the Connection Settings dialog. Close the about:preferences page. Any changes you've made will automatically be saved.

Greeting, Rachel Gomez