Hello @Ian the Nerd , Thanks for using Microsoft Q&A Platform.
Currently, this might have impacted in your case as well, please follow the documentation:
Bing Search APIs will transition from Azure Cognitive Services to Azure Marketplace on 31 October 2023. The existing instances of the
Bing Search APIs
under Azure Cognitive Services will no longer be supported after 31 October 2023. You can continue to create new instances of Bing Search APIs under the Azure Marketplace. Please read this documentation for more Infromation: https://azure.microsoft.com/en-ca/updates/bing-search-apis-will-transition-from-azure-cognitive-services-to-azure-marketplace-on-31-october-2023/
There is a similar issue. Kindly review the related thread: https://learn.microsoft.com/en-us/answers/questions/1421100/bing-custom-search-api-is-returning-404
I hope this helps.
Regards,
Vasavi
-Please kindly accept the answer and vote 'yes' if you feel helpful to support the community, thanks.