Software⏱️ 3 min read📅 2026-06-11

How to Fix 0x8007042B Error – Windows upgrade failed (Error 0x8007042B-0x2000D) when upgrading to build 1607

Windows upgrade failed error 0x8007042B fix for build 1607 installation.

Quick Answer: Try reinstalling the Windows 10 build 1607 ISO or using a different installation media.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. ✅ Best Solutions to Fix It
  3. ✨ Wrapping Up

Windows upgrade failed with error code 0x8007042B-0x2000D when attempting to upgrade from RTM build of Windows 10 Enterprise x64 to build 1607. This issue affects users who have downloaded the correct ISO file and followed proper installation procedures but still encounter a failure during the upgrade process.

This error can be frustrating for users who are eager to upgrade their system, but fortunately, there are steps that can be taken to resolve the issue or even perform a clean install of Windows 10 build 1607.

⚠️ Common Causes

  • The primary reason for this error is due to the fact that Windows 10 build 1607 was not officially released at the time of the ISO download. The RTM build (Release Candidate) had already been superseded by the final version, which may cause issues with the upgrade process.
  • Another possible reason could be related to the way the ISO file is handled or installed on the system.

✅ Best Solutions to Fix It

Clean Install Using a New Installation Media

  1. Step 1: Download the Windows 10 build 1607 installation media from Microsoft's official website or other trusted sources.
  2. Step 2: Create a new bootable USB drive using the ISO file and install it on the system. This will erase all existing data and settings, so ensure that you have backed up any important files before proceeding.
  3. Step 3: Once the installation is complete, follow the in-place upgrade instructions to upgrade from the RTM build of Windows 10 Enterprise x64 to build 1607.

Using a Third-Party Tool or Script

  1. Step 1: Utilize third-party tools such as Media Creation Tool, Rufus, or DISM to create a bootable installation media.
  2. Step 2: Run the tool or script and follow its instructions to upgrade from the RTM build of Windows 10 Enterprise x64 to build 1607.

✨ Wrapping Up

To resolve the issue with Windows upgrade failing due to error code 0x8007042B-0x2000D, it is recommended to perform a clean install using a new installation media. This will ensure that all issues are resolved and the system can be upgraded smoothly. Additionally, users can explore alternative methods such as using third-party tools or scripts to achieve the desired outcome.

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