Media Creation Tool Error 0x80042405 0xA001B

I must be doing something wrong because I always have the update fail with some BS error like this. What are the proper steps to run this tool?

I download the tool to the desktop. I'm on an Admin account. I insert a 16GB thumb drive. I format it. I start the tool. I point it to the thumb drive. During the phase where the files are copied to the USB, I get some stupid error like this:

Why are my steps not good enough? Where is the hole in my logic? Or is this tool just written poorly. I'd like to use stronger language here as I used to have to start it all over again and burn bandwidth trying this failed endeavor over and over.

I've heard people make it work by running the tool FROM the USB. Why would that matter? I've tried to write files to the thumb drive just after the format and before running the tool to make sure I have successful writes. Doesn't help. 

As a workaround today, I left the error up for a bit. Tried to access the thumb drive and it said it needed to be formatted AGAIN! So I did. Then I just opened the C:\$Windows.~WS\Sources\Windows and copied the files to the drive by hand. Made the dang thing myself! WHO WRITES THIS STUFF??

 

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Last updated September 16, 2019 Views 49,599 Applies to:

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When you go to the Media Creation tool do not upgrade. 

Download tool now, Read the instructions.  Pick your edition, select the USB drive, or the ISO file.

Media Creation Tool US;  Read the instructions.  

https://www.microsoft.com/en-us/software-download/windows10

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lacrumb

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I've heard of this USB device and SD card issue you linked, but not caused by the thumb drive used as a boot device for a clean install. I'd like to know more about the step you took to get this error. 
Update = Replace old bugs with new ones.
Skype troubleshooting videos https://youtu.be/XWpIEHiBsXE

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For the past couple of weeks, I too have been wracking my brains on this media creation tool error 0x80042405-0xA001B -- I even went as far as buying new USB flash drives thinking it was the security mechanism in SanDisk flash drives.  This afternoon I downloaded a USB flash drive formatter and noticed the format failed because access to the drive was locked exclusively by a background process. Using process explorer as described in https://www.dedoimedo.com/computers/windows-in-use.html , I was able to locate the mysterious process that had exclusive access to the flash drive, in my case was a shadow backup app.  Once I closed the process, started the media creation tool and was successful.  Performed the task two more times success.  I hope this helps.

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Yeah, this is pretty huge, Robbie. Thanks. I'll have to try process explorer. What you said makes perfect sense. I'll let you know and give you an up-vote if it helps.
Update = Replace old bugs with new ones.
Skype troubleshooting videos https://youtu.be/XWpIEHiBsXE

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I got that error message today. I did your other solution of try & try again...

It was the 3rd try that worked. I did two before getting here. The 2nd was with a fresh MediaCreationTool1903.exe (MCT) after a reboot, but I didn't delete $Windows.~BT & $Windows.~WT first. On the 3rd try, I did delete them, but didn't reboot or take another fresh MCT.

On that 3rd try I meant to run the MCT as an Administrator, but forgot to do so. Never had to do so in the past & never needed more than one try, either.

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Thank you for adding your experience with this issue to the thread. Do you recall if you used the option to just make the version for your PC or if you made both 32 and 64 bit versions installers?
Update = Replace old bugs with new ones.
Skype troubleshooting videos https://youtu.be/XWpIEHiBsXE

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While creating a USB drive copy of Windows 10 Pro 64-bit with Version 1903, I encountered the same error message shortly after the media creation routine started writing to the USB drive.  I had one other USB drive plugged into my system when this occurred. I removed the 2nd UBS drive and started the entire download again which completed as expected.

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You are welcome. I left it at defaults of Windows 10, 64-bit, & English. Here is what I got, 7 Editions, but all of them are x64 & English...

Microsoft Windows [Version 10.0.17763.529]
(c) 2018 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>DISM  /Get-WimInfo  /WimFile:E:\Sources\Install.esd

Deployment Image Servicing and Management tool
Version: 10.0.17763.1

Details for image : E:\Sources\Install.esd

Index : 1
Name : Windows 10 Home
Description : Windows 10 Home
Size : 13,998,570,900 bytes

Index : 2
Name : Windows 10 Home N
Description : Windows 10 Home N
Size : 13,189,869,300 bytes

Index : 3
Name : Windows 10 Home Single Language
Description : Windows 10 Home Single Language
Size : 14,000,352,819 bytes

Index : 4
Name : Windows 10 Education
Description : Windows 10 Education
Size : 14,277,676,521 bytes

Index : 5
Name : Windows 10 Education N
Description : Windows 10 Education N
Size : 13,472,481,418 bytes

Index : 6
Name : Windows 10 Pro
Description : Windows 10 Pro
Size : 14,275,465,030 bytes

Index : 7
Name : Windows 10 Pro N
Description : Windows 10 Pro N
Size : 13,470,575,774 bytes

The operation completed successfully.

C:\WINDOWS\system32>DISM  /Get-WimInfo  /WimFile:E:\Sources\Install.esd  /Index:1

Deployment Image Servicing and Management tool
Version: 10.0.17763.1

Details for image : E:\Sources\Install.esd

Index : 1
Name : Windows 10 Home
Description : Windows 10 Home
Size : 13,998,570,900 bytes
WIM Bootable : No
Architecture : x64
Hal : <undefined>
Version : 10.0.18362
ServicePack Build : 30
ServicePack Level : 0
Edition : Core
Installation : Client
ProductType : WinNT
ProductSuite : Terminal Server
System Root : WINDOWS
Directories : 18679
Files : 87458
Created : 4/1/2019 - 7:09:02 PM
Modified : 6/1/2019 - 1:50:24 AM
Languages :
        en-US (Default)

The operation completed successfully.

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Credit to user Thomas TKH for this fix.

I'm surprised with all the experienced users on this forum that you are getting these unhelpful answers. If you get this error, simple copy and paste the Media Creation Tool onto the USB drive itself, then run it directly. 

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Is this paste after downloading?
Which version is to be downloaded or pasted?
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