The captured video or audio from my test session failed to upload properly or was corrupted. What happened?

For security and test review reasons, all video and audio from your test must be uploaded and accessible. If any video or audio is missing or corrupted, your test will be invalidated.

If you received a message that video or audio from your test session failed to upload properly or was corrupted, please follow these steps before testing again:

  • Close all other programs running on your computer.
  • Make sure you are on an internet connection with at least 2 Mbps download speed and 1 Mbps upload speed. We recommend using a stable, wired ethernet internet connection instead of using Wi-Fi or mobile hotspot services. You can type “internet speed test” into most search engines and find a quick and free way to test your speed. 
  • Ask anyone else using your same internet network to disconnect while you are taking the test, and disconnect all other devices connected to your internet network.
  • Try to take the test late at night or early in the morning, during off-peak network times.
  • If you are in China and using a VPN, try re-downloading the desktop app from englishtest.duolingo.com instead of englishtest.duolingo.cn.
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