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#21
Try downloading the iso using the Heidoc iso downloader tool (free) - Google.
It's also mentioned in the tutorial on downloading an iso file.
Be careful to choose the correct file for your PC.
Here's the error message which I've screen OCR'd for you for search purposes if you wish to do that.
There was a problem running this tool We're not sure what happened, but we're unable to run this tool on your PC. If you continue experiencing problems, reference the error code when contacting customer support.
Error code: 0x80072F76 - 0x20016
Are you running any 3rd party security software?