NetSession does not support optimized download of files when browser is Internet Explorer version 11.
This is due to the security model implemented in Internet Explorer version 11.
Instead, when attempting to download a file using NetSession DLM, users may be directed to direct download link using the browser. In this scenario, users would be able to download the file without the capabilities of optimized download offered by NetSession DLM. Depending on the implementation, users may see different behavior including error condition.
NetSession DLM continues to work with previous versions of Internet Explorer and other browsers like Chrome and Firefox. As a best practice we recommend customers to always publish the direct download link(without DLM) , so users can download file in case NetSession based optimized download does not work.