It seems unlikely that all three files are corrupted. I have tried ubuntu, manjaro, and XM now. I doubt the problem is with the iso file anyway. Do I really need to download ubuntu onto a WSL just to verify the iso file? From what I have read, I need to use bash for this process and to use bash on windows, I need to install a WSL and download ubuntu onto it. Remember that the iso has been downloaded to a laptop that only has Windows 11 installed on it. Click to expand.I have just read about how to do the checksum process using this tutorial.
