An error message appears in the document content when viewing or downloading it using the Graph API

Question

Hi Team,

We are using the Graph API to view and download PDFs from a .doc format. However, an error message appeared in the document content during the viewing/downloading process. We are unable to share the original document because it contains PHI data. We have shared the screenshot and error content for your reference.

Error message as "Error! Reference source not found"

Answer 1

Hi @nandhini.dhandapani@triyam.com

According to the documentation, if you download a file in a JavaScript application, Microsoft Graph will redirect it with 302, but due to the CORS policy, the browser will reject the redirect, resulting in an error that the resource cannot be found.

So when you download a file, first make a request that includes the @microsoft.graph.downloadUrl property:

GET /drive/items/{item-ID}?select=id,@microsoft.graph.downloadUrl

And then file could be downloaded by marking another request for the Url provided in @microsoft.graph.downloadUrl property.

Hope this helps.

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