Error loading add-in ... while manifest is ok

New Contributor

I developped an Excel web addin with an aspnet core 6.0 API and published it on a dedicated server on Azure.
Excel raise an "Error loading add-in" error when the complement is installed on Excel.
Please note that :
- the xml manifest has been validated (common error in this case)
- cors is enabled
- the api has been tested online with swagger

Does any one have a suggestion ?

Thanks

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