Windows update version 20h2 is stuck at 20% installing

I had the update stuck at 61% initially. I believed it was partly due to my bios clock not keeping time correctly. Corrected that but still had to google for other fixes after it got stuck again. After numerous attempts and downloading the update assistant, it got to 99%. I couldn't get past 99% over 2 days until I uninstalled and deleted my Conexant HD audio driver. That did the trick... finally. There could be a whole host of reasons why updates get stuck. It's simply too frustrating and time consuming for me...I'm prepared to ditch Microsoft for Apple.

Hi,

When having troubles with some update, install it manually, much more reliable. You can download it from here, I put the link to the kb5001330:

https://www.catalog.update.microsoft.com/Search.aspx?q=KB5001330

You probably want the "2021-04 Cumulative Update for Windows 10 Version 2004 for x64-based Systems (KB5001330)" for "Windows 10, version 1903 and later", size "555,4 MB. Notice that when searching you can get reapeated results with different names, but at the end is the same MSU file.

Launch the installer, it also seems to stuck soon, let it to work, it then skips to the end and shows the restart dialog.

After, launch again the Windows Update to install the other ones, there should be no problems. There is another one related, optional to install, the kb5001391 one. This one also takes long, and after reaching 100%, it backs to 0% and installs again, it is rare but it ends installing fine. And if not, can always to download and install it manually just like the kb5001330.

Your nVidia graphics card is the problem. Remove your graphics card, use the onboard graphics and the issue will be resolved. 20H2 has issues with nVidia graphics cards. revert back to your previous version of win 10 and reinstall your graphics card.

UPDATE: Try disabling the onboard graphics adapter in device manager. Then reboot to the bios and change your graphics settings to "PCIe."

UPDATE 2:

I actually got 20H2 to install and run smoothly on my desktop. I disabled my nVidia Graphics Adapter in the Device Manager leaving only the Intel Graphics Adapter running. Rebooted my system to bios and changed the graphics to igpu (Intel onboard graphics). Save and reboot to windows. Update to  20H2 from within windows and then go back to device manager. Disable the Intel Graphics Adapter (give it a few seconds to take) and then enable the nVidia or whichever graphics card you want to run. Reboot. Bios. Change the graphics to PCIe. Save and exit. Windows will now run without issue. Do Not Enable the Intel Graphics Adapter. I think there is an issue with 2 graphics adapters being enabled at the same time that creates the problem.

I'm stucked at 18% but in the blue screen. I can't access the control panel. What I can do?