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I have not been able to use/access the latest version of Firefox since it upgraded. I DO NOT like Internet Explorer ! I want my old version of Firefox back ! Help !

I have not been able to use/access the latest version of Firefox since it upgraded. I DO NOT like Internet Explorer ! I want my old version of Firefox back ! Help !

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hello, normally such issues are caused by a firewall/security software which doesn't recognize & therefore blocks new firefox versions: Fix problems connecting to websites after updating Firefox