Azure File Storage Error: Condition Headers Are Not Supported

Question

When attempting to download a PDF file to a browser directly from Azure File Storage I get this error:

<Error>
    <Code>ConditionHeadersNotSupported</Code>
        <Message>
            Condition headers are not supported. RequestId:a84ee68e-   001a-001b-4223-bff5e7000000 Time:2017-04-27T06:57:22.2002199Z
        </Message>
</Error>

Edge: Blank page or blank page with frozen loading indicator.

FireFox: Second time, shows dialog to download file.

Chrome: Blank page or When PDF Documents “Open PDF files in default PDF viewer application” setting is checked, shows dialog to download file.

IE: Shows dialog to download file.

Safari: Displays PDF.

The behavior can be seen here:
https://peachstatepca.file.core.windows.net/content/newsletters/PresseApril2017.pdf?sv=2016-05-31&sr=f&sig=rkQEmY6IWXZqcgvhmm00gLQ%2FCZEq6nsH95S3aP9T72A%3D&se=2017-05-01T11:46:18Z&sp=r

Answer 1

We were also facing this issue and the easiest way, till Azure File Team implements the suggestion given in the Azure Feedback forum, a workaround is to append extra parameter at the end of URL. So, for the above URL -- https://peachstatepca.file.core.windows.net/content/newsletters/PresseApril2017.pdf?sv=2016-05-31&sr=f&sig=rkQEmY6IWXZqcgvhmm00gLQ%2FCZEq6nsH95S3aP9T72A%3D&se=2017-05-01T11:46:18Z&sp=r&xyz=timestamp of client

This will ensure browser is not caching and hence conditional headers will not be added

Answer 2

Azure File storage doesn't support Conditional Headers at this time.

A workaround is to use the CacheControl property and set it to no-cache, no-store, must-revalidate.

• You can do this for new files during upload by setting the Properties of the File.
• For existing files, they can be updated via a Powershell script, or one by one using Storage Explorer. You'll need to clear your browser cache to remove existing cached header information.