Edge does not cache videos if the video request ends up redirecting

Won’t fix Issue #16404855


Marek S.
Mar 15, 2018
This issue is public.
Found in
  • Microsoft Edge
Found in build #
Reported by 1 person

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Steps to reproduce

Note this is for Javascript created requests not via browser address bar.

Assume OriginalUri redirects to RedirectedUri. Keep requesting using OriginalUri and Edge/IE will always reload all the data off the network.

Request the video using RedirectedUri directly and it does cache the video correctly.

Note the OriginalUri does not have cache headers, it may have a pragma no cache, but RedirectedUri does return proper cache headers, public, max-age=… Since these are in fact two separate requests, the second one should be cached. Chrome, Firefox do cache it.

This results in massive wasted bandwidth usage when a site uses video playback and relies on caching.

To reproduce this goto https://www.teleport.io/feed/mthayes?playMode=livetimelapse let the video load up or finish playing, then in UI switch size to x480, wait so it downloads, go back to x768 and the video will be pulled off the network again. Please fix. Occurs in IE as well.


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    Comments and activity

    • Microsoft Edge Team

      Changed Assigned To to “Gurpreet V.”

      Changed Assigned To to “Venkat K.”

      Changed Assigned To to “Stephen E.”

      Changed Assigned To from “Stephen E.” to “Matthew H.”

      Changed Status to “Confirmed”

      Changed Status from “Confirmed” to “Won’t fix”

    • Hi!

      This issue has been resolved as “Won’t Fix” because we have made a decision to scope bug fixing on the current Edge product to critical security and reliability issues, and the minimum necessary to service in-market customers (RS4 and RS5), in order to focus on high quality delivery of the new Edge based on open source.​

      The insider builds of the new Microsoft Edge can be downloaded here: https://www.microsoftedgeinsider.com/en-us/


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