Quick post: Windows branch downgrade

  • Context:

We started testing the Windows 10 1809 on different hardware and we noticed some issues. Explorer keeps crashing and we decided to rollback.

  • Problem:

After the upgrade a new account logged on the computer.
DISM.exe /Online /Initiate-OSUninstall now refuses to run and says:

Error: 0xc16a0102
The OS uninstall cannot be initiated. User profiles were added.

  • Solution:

Identify the offending profile by opening the dism log file

Delete the offending profile

$UserProfiles = Get-WmiObject -Class Win32_UserProfile
# View it
$u = $UserProfiles | ? LocalPath -match 'myOffendingUserName'
# Delete user folder
Get-Item "$($u.LocalPath)" | 
Remove-Item -Force -Recurse -Confirm:$false
# Delete user profile reference

Rollback to 1803 is now successful using dism.exe 😎

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