Error code 0xc000021a

Question

Hello, I recently built a PC and when I tried to install Windows 10 for the first time I got the error 0xc000021a. I have tried a few solutions but none seem to work.

Answer 1

Are you upgrading or performing a direct clean install?

What is the make and model of the computer?

Have you checked the manufacturers website to determine compatibility?

Check this List to Determine if Your Computer is Compatible with the Windows 10 Fall Creators Update 1803

https://answers.microsoft.com/en-us/windows/wik...

Its possible the install media is corrupt, I would download and make another bootable copy:

How to download official Windows 10 ISO files

[http://answers.microsoft.com/en-us/windows/wiki...](http://answers.microsoft.com/en-us/windows/wiki/windows_10-windows_install/how-to-download-official-windows-10-iso-files/35cde7ec-5b6f-481c-a02d-dadf465df326)

Try simplifying your configuration by keeping only your mouse and keyboard attached, that means:

Disconnecting multiple display monitors.



Remove discrete video cards, use the on-board graphics if your motherboard supports it.



Swap out memory modules - a RAM module might be corrupt - you can also ensure RAM sticks are installed slots 1 and 3. Your RAM modules might be corrupt, try scanning them for errors. 

https://www.groovypost.com/howto/use-the-memory...

If you have more than one hard disk installed, disconnect all except the target disk where Windows 10 will be installed.



Reset your BIOS Defaults.

https://www.groovypost.com/howto/reset-pc-bios-...

Disconnect all external devices, since connected devices can sometimes confuse setup. 

If setup is successful after performing these tasks, you can reinstall each removed component.

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Answer 2

Hi, thank you for your help. I downloaded the iso files onto a different usb and installed it from there. It worked perfectly then.

Answer 3

Hi RichieMulhern,

I am Wilfredo an Independent advisor

follow the instructions in the following link

https://docs.microsoft.com/en-us/windows-hardwa...

I hope it helps you

Answer 4

Hi,

Please, do a thorough memory test. Check the surface of hard disk. Do you use genuine USB or DVD?