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    Object Storage Service:0048-00000111

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    Object Storage Service:0048-00000111

    Last Updated:Jul 21, 2023

    Problem description

    When an acceleration endpoint of Object Storage Service (OSS) is used to access an object from a browser, the browser downloads the object instead of providing a preview of the object.

    Causes

    If you use an acceleration endpoint to access an object in a bucket for which transfer acceleration was enabled after 00:00:00 on January 16, 2021, the response returned by OSS includes the x-oss-force-download and Content-Disposition headers.

    x-oss-force-download: true
Content-Disposition: attachment

    Content-Disposition: attachment triggers a download operation instead of a preview in a standard browser.

    Examples

    For example, if you use the acceleration endpoint in a browser to access an object named test in a bucket for which transfer acceleration was enabled after 00:00:00 on January 16, 2021, the preceding two headers are included in the response. Content-Disposition: attachment triggers a standard browser to download the object instead of providing a preview. 

    GET /test HTTP/1.1

HTTP/1.1 200 OK
Content-Disposition: attachment
x-oss-force-download: true

    Solutions

    If you do not want OSS to return a header that triggers the download operation, use a custom domain name to access the object. For more information, see Map custom domain names.

    References