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How do I unblock Mozilla from my pc?

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A notification from McAfee popped up saying that something from Mozilla was trying to gain access to my computer and wanted to know if I should allow it, allow it once, or block it. Not knowing what it was I blocked it. Soon after that my tabs stopped loading and said that it was unable to connect to the server. My internet is working fine on other devises and it says that I'm connected on the computer. I'm not sure how to unblock it so I can use the Internet again

A notification from McAfee popped up saying that something from Mozilla was trying to gain access to my computer and wanted to know if I should allow it, allow it once, or block it. Not knowing what it was I blocked it. Soon after that my tabs stopped loading and said that it was unable to connect to the server. My internet is working fine on other devises and it says that I'm connected on the computer. I'm not sure how to unblock it so I can use the Internet again

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Hello there, assuming that you are using windows, here are the procedures to unblock it. This method isn't limited to just firefox,

>Open security centre >go Web and email protection >Go to firewall >go to Internet connection for programs (it may slightly vary according to versions) >Change block to full or outgoing access etc