Win 10 Pro 1809 error 0xc000021a

recremar · Dec 12, 2018

Get error 0xc000021a when trying to upgrade from 1803 to 1809. Both media creation tool and win 10 upgrade tool fail. SFC/scannow completes without error. chkdsk /f /r error completes without error. Completed successfully program gsmartcontrol-1.1.1-win32.exe. Please help. Thanks.

Sysnative Windows Update · Dec 13, 2018

Hello and welcome!

Please attach setuperr.log and setupact.log.

C:\Windows\panther

recremar · Dec 14, 2018

I do not have either log file in that path.

Sysnative Windows Update · Dec 14, 2018

SFCFix Script

Warning: this fix is specific to the user in this thread. No one else should follow these instructions as it may cause more harm than good. If you are after assistance, please start a thread of your own.

Download SFCFix.exe (by niemiro) and save this to your Desktop.
Download the attached file, SFCFixScript.txt, and save this to your Desktop. Ensure that this file is named SFCFixScript.txt - do not rename it.
Save any open documents and close all open windows.
On your Desktop, you should see two files: SFCFix.exe and SFCFixScript.txt.
Drag the file SFCFixScript.txt onto the file SFCFix.exe and release it.
SFCFix will now process the script.
Upon completion, a log should be created on your Desktop: SFCFix.txt.
Copy (Ctrl+C) and Paste (Ctrl+V) the contents of this into your next post for me to analyse please - put [CODE][/CODE] tags around the log to break up the text.

recremar · Dec 14, 2018

Attached is the file requested.

Sysnative Windows Update · Dec 14, 2018

Step#1 - DISM /RestoreHealth Scan
Warning:this fix is specific to the user in this thread. No one else should follow these instructions as it may cause more harm than good. If you are after assistance, please start a thread of your own.

Right-click on the Start button and select Command Prompt (Admin)
When command prompt opens, Copy (Ctrl+C) and Paste (Right-click > Paste) the following command into it, then press Enter
Dism /Online /Cleanup-Image /RestoreHealth
Once it finishes, copy and paste the following into the command-prompt window and press Enter. If prompted to overwrite the existing file go ahead.
copy %windir%\logs\cbs\cbs.log "%userprofile%\Desktop\cbs.txt"
Once this has completed please go to your Desktop and you will find CBS.txt => Please zip/upload to this thread.
Please Note:: if the file is too big (over 7MB) to upload to your next post, please upload via a service such as Dropbox or One Drive or SendSpace and just provide the link.

recremar · Dec 14, 2018

Operation completed successfully. File attached

Sysnative Windows Update · Dec 14, 2018

1. Download the Media Creation Tool and save this to your desktop. Go ahead and run this as well. Note: Click the Download tool now button when you get to this link.
2. Accept the License Agreement
3. Download the ISO file to your desktop.
4. Double-click on the ISO and then run the setup to try and upgrade your machine.

We want to get the ISO so that you don't have to keep downloading which can take hours.

recremar · Dec 14, 2018

As stated in my initial post, I have done this with the media creation tool and the windows update tool. Each time resulted in the same error. The last win 10 download was on 12/10.
i will do again but later.

Sysnative Windows Update · Dec 14, 2018

Yes, but I need to get the logs immediately after the failure to see why the update is failing.

recremar · Dec 15, 2018

I tried an in place install again after a new download using the media creation tool. Received the same error again upon the first reboot. Rebooted into another OS on another drive. Copied the two log files in the windows/panther path. Rebooted to continue the setup and the redo/uninstall was completed and booted back into my system. As I suspected the two log files were deleted upon the roll back. See the two attached files. However the zipped setupact log file is over 9 mb and cannot be uploaded.

Sysnative Windows Update · Dec 15, 2018

Please open CMD as Admin and enter the following:

Code:

 Dism /online /Get-Drivers

recremar · Dec 15, 2018

Done. How do I copy/print what was reported?

Sysnative Windows Update · Dec 15, 2018

I'm just interested in whether it completed successfully or if there was an error. If there was an error, what was the error code?

recremar · Dec 15, 2018

Completed successfully; no error

Sysnative Windows Update · Dec 15, 2018

Go to: C:\Windows\Servicing\Version and let me know which folder contains files.

recremar · Dec 15, 2018

C:\WINDOWS\servicing\Version\10.0.17134.464. Only folder

Sysnative Windows Update · Dec 15, 2018

SFCFix Script

Warning: this fix is specific to the user in this thread. No one else should follow these instructions as it may cause more harm than good. If you are after assistance, please start a thread of your own.

Download SFCFix.exe (by niemiro) and save this to your Desktop.
Download the file below, SFCFix.zip, and save this to your Desktop. Ensure that this file is named SFCFix.zip - do not rename it.
Save any open documents and close all open windows.
On your Desktop, you should see two files: SFCFix.exe and SFCFix.zip.
Drag the file SFCFix.zip onto the file SFCFix.exe and release it.
SFCFix will now process the script.
Upon completion, a file should be created on your Desktop: SFCFix.txt.
Copy (Ctrl+C) and Paste (Ctrl+V) the contents of this file into your next post for me to analyse please - put
Code:
tags around the log to break up the text.

Dropbox - SFCFix.zip

recremar · Dec 15, 2018

Attached.

Sysnative Windows Update · Dec 15, 2018

You have done this incorrectly. You have to drag the zip on top of the exe and release.

Win 10 Pro 1809 error 0xc000021a

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