CORS errors in previews/downloads

Hello, all -

I've got a webpage where I make some of my Box-hosted content available for download; however, most browsers don't show a preview of these files. Inspecting the page, I see several hundred CORS errors of this type:

Access to internal resource at 'https://cdn01.boxcdn.net/_assets/img/favicons/manifest-rw1AEP.json' from origin 'https://app.box.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Obviously, resolving this requires validating the request from the Box side, but I can't find any documentation (other than "here's how to validate via an app") that describes anything of the sort.

Thanks in advance for your help!

Kourtney

2020年11月30日 20:47

Hello,

Is the URL on the CORS whitelist for your application in the configuration tab of the developer console for you application? If so, is this on a public page I would be able to take a look at?

Best,

Box Developer Advocate

203k Help Desk

2020年12月01日 01:40

Hi, Kourtney -

Thanks for your response. There's no application involved; these are simply embedded links to content on Box. Here's a copy of that page:

http://203kcontractors.com/login/14634-2

As you can see, it throws 10 CORS errors.

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