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Original Question

or Issue:

 PDF previews are not working.

Environment:
  • Product - FileCloud Server 
  • Version - 23.241x
  • Platform - Any
Steps to Reproduce:

 

 
Error or Log Message: Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://my-fc-instance.com/xxx (Reason: CORS header 'Access-Control-Allow-Origin' missing). Status Code: 403.

Defect or

Enhancement Number:

  
Cause:
This is caused when using an S3 bucket for your files without a CORS policy.
A CORS policy is required to ensure your resources can be accessed from a third-party application.

Resolution or

Workaround:

To configure the CORS policy:

  • Sign in to the AWS Management Console and open the Amazon S3 console at https://console.aws.amazon.com/s3/.
  • In the Bucket name list, choose the name of the bucket that you want to create a bucket policy for.
  • Choose Permissions, and then choose CORS configuration.
  • In the CORS configuration editor text box, type or copy and paste the following CORS configuration:

[
    {
        "AllowedHeaders": [
            "*"
        ],
        "AllowedMethods": [
            "GET",
            "PUT",
            "POST",
            "DELETE"
        ],
        "AllowedOrigins": [
            "https://my-fc-instance.com"
        ],
        "ExposeHeaders": [
            "ETag"
        ],
        "MaxAgeSeconds": 3000
    }
]
  • Click Save.
Notes:   
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