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If you find that your Windows Update is blocked at 0% or another number in Windows 10, Windows 8.1, Windows 8, Windows 8, Windows 7 and Windows Vista when you download updates, this article will help you solve the problem.
Windows Update is blocked downloading updates
If your Windows Update displays available updates and your computer starts downloading them, it may stop working at some point. It will show a constant number, but there will be no progress. The number in your case could be 0%, 23%, 33% or any other, but every time you try to download the updates, you will find that they are stuck on that particular image, even if you leave them an hour or two. I faced this problem and my download was 23% when I tried to get Windows Insider builds.
It helped me and I’m sure he could help you too. You can click on the pictures to see a larger version.
In the WinX menu, open the command prompt (Admin). Enter the following in order and press Enter:
Network Stop Bits
This will stop the Windows update services.
Now go to the folder C:WindowsSoftwareDistribution and delete all files and folders it contains. Press Ctrl+A to select All and then Delete.
If files are used and you cannot delete some files, restart your device. After restarting, execute the above commands again. You can now delete the files from the folder mentioned Software Distribution.
After deleting this folder, you can restart your computer or enter the following commands individually in the CMD and press Enter to restart the Windows Update services.
Net Start Bits
Run Windows Update again and check.
You can download and install updates successfully. You will then see that a restart has also been planned.
I suggest you start over immediately to complete the process.
It worked for me and I hope it works for you.
See this article if Windows updates cannot be installed.
If nothing helps, you can download and reinstall Windows 10 ISO.
Read: Why does updating Windows 10 cause grief?