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missing drop down menu in search bar

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My search bar is missing the drop down menu. Yahoo has mysteriously appeared as the default engine in my search bar window. When I click the search icon, no drop down menu appears but rather my home page defualts to Yahoo.

This just started today.

My search bar is missing the drop down menu. Yahoo has mysteriously appeared as the default engine in my search bar window. When I click the search icon, no drop down menu appears but rather my home page defualts to Yahoo. This just started today.

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I think Yahoo replaced your search bar. There would be a solution in