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Office-js addin with webapi in Api management. Failed to fetch
Hello. My application contains one office-js addin (typescript) project + one Webapi core (c#) project, both communicating through a fetch function when cors is enabled.It works together properly on ...
The “failed to fetch” error commonly encountered in Office.js add-ins deployed to Azure is typically caused by issues with HTTPS configuration or CORS policies.
Self-signed certificates are not supported in this context. Office add-ins require a trusted SSL certificate issued by a recognized Certificate Authority (CA). In addition, CORS must be correctly configured within Azure API Management, not just at the WebAPI level.
Requirements for running Office Add-ins - Office Add-ins | Microsoft Learn