Access to fetch at 'https://www.microsoft.com/releasecommunications/api/v1/m365' from origin 'https://contoso.sharepoint.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource
What causes it and how to fix it:
- The public Microsoft 365 roadmap JSON has no CORS headers — an SPFx web part can't fetch itreleasecommunications/api/v1/m365 answers 200 without Access-Control-Allow-Origin; proxy it server-sideCause and fix →