Temporarily disable extensions like uBlock Origin, Privacy Badger, or built-in browser shields (like Brave Shields). Refresh the video page and attempt the download. Alternative Solutions
I’ll assume you want a substantial, polished explanation (e.g., an article or troubleshooting guide) about the error-like phrase: “sadly we failed at downloading that specific media video downloadhelper new” — covering likely causes, troubleshooting steps, and how to prevent it.
To understand the fix, it helps to understand what the message actually means. Under the hood, the Video DownloadHelper extension works by launching a native companion application (CoApp) that acts as the video download engine. When you see this error, it almost always signifies a failure in the connection between the browser extension and that CoApp. The specific "coapp_failure" in the detailed logs indicates that your browser extension cannot properly communicate with the downloading tool on your computer.
Some websites intentionally block download extensions by identifying the automated traffic patterns they create. You can trick the website into treating the download request as a standard user view. Go to Video DownloadHelper > Advanced > Network . Look for the User-Agent configuration. To understand the fix, it helps to understand
Many modern streaming platforms use HTTP Live Streaming (HLS), which splits videos into hundreds of tiny fragments. If the default downloader fails to stitch them together, change the download method. Click the VDH icon and open . Navigate to the Advanced or Bitmaps tab. Look for the HLS settings section.
Corrupted session data can prevent the extension from mapping the video stream fragments. Open your browser settings.
If you are using Google Chrome, try installing the extension on Firefox or Edge. The specific "coapp_failure" in the detailed logs indicates
Let’s go from the simplest to the most advanced fixes. Apply them in order, testing after each step.
Ensure you have at least double the size of the video available in free disk space. Check the VDH settings to ensure the Storage Directory is set to a folder where you have full read/write permissions. Summary Checklist Is the CoApp updated? (Most likely fix) Is the content DRM-protected? (If yes, it won't work) Have you tried a different resolution? Is your VPN or Ad-blocker off?
The extension requires a Companion Application (CoApp) to aggregate complex video fragments into a single file. Try again later.
If you are comfortable with a terminal, is the most powerful media downloader available. It can often download streams that VDH cannot. 2. Browser Developer Tools
Close all windows completely and reopen them.
Follow these steps in order. Most users stop at Step 2 or 3.
Completely removing and then re-adding both the extension and the Companion App can resolve damaged installations. Try a Different Format:
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