page you're looking for can't be found screen keeps appearing
A screen keeps popping up on my Mac saying, "The page you're looking for can't be found." It had never happened until I brought the Mac home with a different network. The message started appearing then, and even now after I have returned the Mac to the original network, the message continuously appears. You can click the window closed, but it will show up again in an hour or so.
Mac mini, 10.10