MDT Failed to upgrade existing WIN 11 21H2/22H2 to 23H2

Hi Evans_Huang,

When encountering error code 0x80004005 during a Windows upgrade, typically denoting an "Access Denied" issue, it's a broad error with varied potential causes. You can use this steps to troubleshoot the issue:

1. Run Windows Update Troubleshooter:
- Access Settings.
- Navigate to Update & Security.
- Opt for Troubleshoot in the left pane.
- Execute the Windows Update Troubleshooter.

2. Check Disk Space:
- Verify adequate free space on the system drive, usually C:.
- Windows updates demand a specific amount of free space for successful installation.

3. Disable Antivirus/Firewall:
- Temporarily disable antivirus and firewall to prevent interference during the upgrade.

4. Run SFC and DISM:
- Open Command Prompt as an administrator.
- Execute 

sfc /scannow

to scan and repair corrupted system files.
- Follow up with

DISM /Online /Cleanup-Image /RestoreHealth

to address component store corruption.

5. Manually Download and Install the Update:
- Explore the Microsoft Update Catalog (https://www.catalog.update.microsoft.com/Home.aspx).
- Search for your specific update and manually download it for installation.

6. Reset Windows Update Components:
- Open Command Prompt as an administrator.
- Execute a series of commands to stop services, rename folders, and restart services.

  net stop wuauserv
  net stop cryptSvc
  net stop bits
  net stop msiserver
  ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
  ren C:\Windows\System32\catroot2 catroot2.old
  net start wuauserv
  net start cryptSvc
  net start bits
  net start msiserver

7. Check Permissions:
- Ensure the user account possesses sufficient permissions, specifically administrative privileges.