POST request suddenly not working in Power Query.

Hi Tess,

Thank you for reaching out to the community, and a big thank you to Fowmy for the detailed and helpful response.

Building on the suggestions provided, it’s indeed possible that the recent Power BI Desktop Version: 2.139.2054.0 (January 2025) update may have introduced some changes affecting POST requests in Power Query. Here are a few additional steps that might help you troubleshoot and narrow down the issue:

• Test the API in Postman: This will verify if the API is functioning correctly. If your POST request succeeds in Postman but fails in Power Query, it is likely an issue related to Power BI.
• If the request was working before, you can try using a previous version of Power BI Desktop to see if the issue is version specific.
• Sometimes updates impact how Power Query handles Web.Contents() or headers. Please double-check your M code for the POST request, ensuring the Content-Type header and body are correctly configured.
  
  

If this helps, then please Accept it as a solution and dropping a "Kudos" so other members can find it more easily.
Thank you.