MS Edge: I keep seeing this page

I don't understand where this is coming from. Edge is jumping to this page. I've scanned over and over with Windows Defender and it doesn't find anything. This started about the same time as another warning began regarding a needed Flash Player update.

I have Mozilla Firefox installed also. None of this is happening with it.

Note: When I tried to preview this post, it jumped to a different page, mostly blue, saying there was an issue with Windows Defender.

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