4 ways to revert to an earlier version of Windows

1 min read · Updated 8 August 2022

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By default, it is possible to revert (downgrade) to a previous version of Windows within 10 days of installing the new version.

After this time (unless you’ve increased this time manually), you won’t be able to use the feature to downgrade to an earlier version of Windows.

In this video, I show you different methods to downgrade to an earlier version of Windows.

PowerShell commands and code used in the video

# Check if you are in the period allowing you to downgrade to an earlier version of Windows.
# Display the installation date in powershell
(Get-ComputerInfo).OsInstallDate

# Display the number of days (from 2 to 60) during which it is possible to go back (default: 10)
DISM /Online /Get-OSUninstallWindow

# If you want to know the date after which you can no longer go back
$duree = ((DISM /Online /Get-OSUninstallWindow | Select-String Uninstall) -split ': ')[-1]
(Get-ComputerInfo).OsInstallDate.AddDays($duree)

# Downgrade with the dism command
dism /Online /Initiate-OSUninstall
# Or in Powershell
Start-OSUninstall -Online