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Unable to open sites

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I am unable to open certain sites, like Medicare claims, which I've had no trouble with in the past. I get an error message "To protect your security, api.medicare.gov will not allow Firefox to display the page if another site has embedded it. To see this page, you need to open it in a new window." This happened with another site as well. Please advise.

I am unable to open certain sites, like Medicare claims, which I've had no trouble with in the past. I get an error message "To protect your security, api.medicare.gov will not allow Firefox to display the page if another site has embedded it. To see this page, you need to open it in a new window." This happened with another site as well. Please advise.

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Why api.medicare.gov and not just https://www.medicare.gov? How did you get to api.medicare.gov? Is it a bookmark?

Modified by jonzn4SUSE

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