Sometimes Windows 10 errors on the second startup can also occur due to the presence of third-party applications or services. There are several reasons that can cause this issue, such as missing system files, insufficient disk space, a corrupt Windows Image, or a pending XML file. Simply put, this error occurs when the upgrade process fails to migrate data to the new operating system.

The error 0xC1900101 - 0x4000D prevents users from installing the latest version, which usually occurs during the second boot phase when data migration happens to leave your computer vulnerable. Then, do you know what is it and how to fix this error? Please keep reading below. The last thing I tried was an installation from an ISO image on a USB stick, which gave me the following error: 0x8007042b - 0x4000D The installation failed in the SECOND_BOOT phase with an error during MIGRATE_DATA operation. It gets to about 91% complete in the second boot phase, but then always rolls back the update. Here is what the user says: I've been trying to update my Windto 1909, and having tried a lot of things I'm totally stuck.

Method 9: Upgrade Windows 10 Using an ISO File.

Method 8: Check Windows Update Log File.

Method 6: Disable Third-party Antimalware Software.

Method 4: Delete or Rename the SoftwareDistribution Folder.

Method 2: Fix Corrupted System Files – SFC & DISM.

Method 1: Run Windows Update Troubleshooter.

So, this article from MiniTool Partition Wizard shows you what it is and how to fix it. During the Windows update, 'the installation failed in the SECOND_BOOT phase with an error during MIGRATE_DATA operation' error will appear.

0xc1900101