When I go to open Firefox
I get a message error that says Firefox is open and only one window can be open at time. However I don't see an open window
I get a message error that says Firefox is open and only one window can be open at time. However I don't see an open window
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You can try stopping the app to run in background and running firefox again.
Goto settings > Apps and select firefox from app list.Then click Force stoo