0x8007042B – 0x4000D The installation failed in the SECOND_BOOT phase with an error during MIGRATE_DATA operation

So, i've resolved the issue and successfully installed Windows 10, version 20H2.

In case it helps other users, here's what i did to resolve:

So, what has become clear in my case is that the log files in C:$Windows.~BT\Sources\Panther folder (files, setuperr.log and setupact.log) together with the rollback log files in C:$Windows.~BT\Sources\Rollback (files, Setupact.log and Setuperr.log) provide key clues to resolving issues like this. In my case, i saw some reference (I think in one of the rollback logs) to there being an issue with this file file located here: C:\Users[username]\Application Data\Microsoft\Forms\OUTLOOK.BOX

From the log files i could see that the windows update quickly aborted / rolled back after being unable to update / some setting related to this file. I deleted this file and incredibly the Windows 10 update installed without any issues.

Hope this helps other users.

Thanks. Here's link to the log files as requested: https://1drv.ms/u/s!AnxC2opkYblBgaNfqCc1ohYTyOPp\_w?e=YP7MTL

There were no log files in C:$Windows.~BT\Sources\Rollback

thanks.

Many thanks. So to confirm it is indeed the 20H2 Install media i have downloaded ("MediaCreationTool20H2"). When running setupdiag.exe, it provides the following  report:

SetupDiag was unable to match to any known failure signatures.

SetupDiag version: 1.6.0.0

System Information:

Machine Name = DESKTOP-1D78NQ2

Manufacturer = HP

Model = HP Spectre x360 Convertible 15-df0xxx

HostOSArchitecture = x64

FirmwareType = UEFI

BiosReleaseDate = 20200813000000.000000+000

BiosVendor = F.42

BiosVersion = 

HostOSVersion = 10.0.17134

HostOSBuildString = 17134.1.amd64fre.rs4_release.180410-1804

TargetOSBuildString = 10.0.18362.712 (19h1_release_svc_prod1.200217-0643)

HostOSLanguageId = 

HostOSEdition = Core

RegisteredAV = Windows Defender

FilterDrivers = FileInfo

UpgradeStartTime = 21/01/2021 15:21:55

UpgradeEndTime = 21/01/2021 15:42:08

UpgradeElapsedTime = 00:20:13

CV = 3wee/ezFvEqGEt+c

ReportId = A9C05B7D-CA28-489C-9B3B-F3FEFFE932C3

For the setuperr.log and setupact.log files: i might need some guidance on how these are securely shared?

thanks,

Hi,

I am Sumit, an Independent Advisor.

Let us check the Installation log to find why the update failed. Please share the following logs:

The Panther logs. Files named Setupact.log and Setuperr.log from the following path C:$Windows.~BT\Sources\Panther

The Rollback logs: These usually are created if Windows Update rolls back. Files named Setupact.log and Setuperr.log from the following path C:$Windows.~BT\Sources\Rollback

[Only if the error code is 0xC1900101-0x30018] The Device Install Log from C:/$Windows.~bt\Sources\Rollback\setupapi\setupapi.dev.log

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

To upload files here, see the following article. You must copy the logs to the desktop first and then upload.

How to share diagnostic files/logs on Microsoft community

https://answers.microsoft.com/en-us/feedback/fo...

As the log size might be large consider zipping everything before uploading.

There are a couple of things you can do.  If you have the 20H2 Install media, in the Sources directory, there is a utility named setupdiag.exe.  You can run that and it will create a report and a file folder.  Copy and paste the report, if you get one.

Also there are two files we normally ask for.  They are in the C:$Windows.~BT\Sources\Panther folder and named setuperr.log and setupact.log.  You can zip them together and make available on your OneDrive or some other hosting site.  The setupact.log file is very large so give it some time when copying or zipping.

Hopefully, we will be able to find a reason for your problem, but it doesn't always work out.