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How can I disable the "forget this site" feature?

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I meant to delete a page from my browser's history, and accidentally clicked on "forget this site." I cannot find any information online for undoing this action. I don't want my history to forget this site.

I meant to delete a page from my browser's history, and accidentally clicked on "forget this site." I cannot find any information online for undoing this action. I don't want my history to forget this site.

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"Forget About This Site" will remove all the current content (e.g. bookmarks, cookies, passwords, cache, history, exceptions) that you have saved from a website.

It doesn't have any lasting effect, so if you revisit such a 'forgotten' website then data from that website will be saved once again.

You can not recover the forgotten data unless you have a backup of the affected files in the Firefox Profile Folder