0x8007042B - 0x3000D error when trying to install Windows 10 Anniversary Update

Hello All,

I've tried to install the Anniversary update with the Media Creation Tool and it halts and reverts back to former version of windows when about 71% complete with the error code 0x8007042B - 0x3000D The installation failed in the FIRST_BOOT phase with an error during MIGRATE_DATA operation. Anyone know what the problem might be?


Question Info

Last updated May 23, 2019 Views 11,195 Applies to:

Upgrading from Win10 1511 to 1703.  Same problem & codes as original question.  Unlike below replies with solutions, only Microsoft AV was installed.  Two steps to my solution.  

1 - I found two profiles referencing the same user directory on the hard disk.  I deleted the one I suspected was invalid.  (Export/Backup first!) 

HKLM\SOFTWARE\Microsoft\Windows NT\ CurrentVersion\ProfileList

2 - I switched from using a domain admin account to using the local PC admin account to perform the upgrade (run setup.exe).  

Unsure which step or both was the key.  

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