Maybe now is a good moment to revisit the Microsoft documentation you already linked and my first reply, both of which mention Ocp-Apim-Subscription-Key, which is missing from all your code. Note that the WWW-Authenticate header you get back also shows that header name.

Most likely the correct approach is to add a header with that name and your secret key as the value.

In reply to Re^5: New Bing Search Api (5) by Corion
in thread New Bing Search Api (5) by Anonymous Monk

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