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Firefox's screen, icons, text,everything is very large when I open it.

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I have deleted it and reloaded it many times and am now using Explorer which I don't like but it opens up naturally, not large like Firevox. Nothing else on my computer opens that way except Firefox. Can you tell me what to do to correct this?

I have deleted it and reloaded it many times and am now using Explorer which I don't like but it opens up naturally, not large like Firevox. Nothing else on my computer opens that way except Firefox. Can you tell me what to do to correct this?

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Your Firefox shortcut may have a compatibility setting.

Try this: close Firefox and right-click the shortcut (e.g., on the desktop or quick launch, whatever is relevant), choose Properties, then the Compatibility tab. Clear any settings/checkboxes there. Then restart Firefox. Does that help?