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proxy resets to 127.0.0.1. Can reset to NO PROXY but resets upon restart. Have deleted prefs,js but problem returns. Help....

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First start returns "proxy server refuses". I reset options to "no proxy" and Firefox will run OK but next start proxy has been reset to 127.0.0.1.

First start returns "proxy server refuses". I reset options to "no proxy" and Firefox will run OK but next start proxy has been reset to 127.0.0.1.

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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).