Software⏱️ 4 min read📅 2026-06-15

How to Fix: How can I fix this error in the DISM log file?

Error fixing corrupted Windows using DISM command.

Quick Answer: The error message indicates that the alternate source path directory could not be accessed. This is likely due to a corrupted file system, and you should try running the DISM command with elevated privileges and ensure the source path is correct.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

The error message 'Warning CBS The alternate source path directory could not be accessed [HRESULT = 0x8007007b - ERROR_INVALID_NAME]' appears in the DISM log file when attempting to repair a corrupted Windows installation using an extracted WIM file as a source. This issue affects users who are trying to perform an in-place upgrade or repair of their operating system.

This error can be frustrating for users who have encountered issues with their Windows installation and are looking for a solution to fix the problem. In this guide, we will walk you through the possible causes and solutions to resolve this error.

🔍 Why This Happens

  • The primary cause of this error is that the alternate source path directory specified in the DISM command cannot be accessed. This could be due to a corrupted or invalid file system on the source drive, or a permissions issue with the user running the DISM command.
  • Alternatively, it's also possible that the extracted WIM file does not contain the correct version of Windows that matches the corrupted installation, which can cause issues with the repair process.

🚀 How to Resolve This Issue

Repairing the File System

  1. Step 1: First, ensure that the source drive containing the extracted WIM file is properly connected and accessible. If the drive is not connected or is corrupted, try reconnecting it or repairing the file system using a third-party tool.
  2. Step 2: Next, run the DISM command with the '/ScanHealth' option to scan for any issues with the file system or registry. This will help identify if there are any underlying problems that need to be addressed before proceeding with the repair.
  3. Step 3: After scanning for health issues, attempt to run the DISM command again with the original options used in the error message. If the issue persists, try using a different version of Windows from the extracted WIM file or seeking assistance from Microsoft Support.

Verifying the Extracted WIM File

  1. Step 1: Check if the extracted WIM file contains the correct version of Windows that matches the corrupted installation. If you are unsure, try comparing the contents of the extracted WIM file with a known good copy of the same version of Windows.
  2. Step 2: If the extracted WIM file is found to be incorrect, attempt to extract a new copy from another source or seek assistance from Microsoft Support.

✨ Wrapping Up

To resolve the error 'Warning CBS The alternate source path directory could not be accessed [HRESULT = 0x8007007b - ERROR_INVALID_NAME]' in the DISM log file, try repairing the file system or verifying the extracted WIM file. If these steps do not work, consider seeking assistance from Microsoft Support or trying alternative methods to repair your corrupted Windows installation.

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