Is there a registry setting that will allow me to re-enable the 'Go Back' button in Windows 11 after 10 days for going back to Windows 10?
There absolutely is a registry key that can be used to extend the period to 60 days. However, it must be changed before Windows.old is deleted, in the original 10 day timeframe. If Windows.old is deleted, then it's not possible, to revert back to the previous version.
You can verify if it's possible by running the following in an elevated PowerShell prompt:
DISM /Online /Get-OSUninstallWindow
If you receive Error 1168 – Element not found it means the system cannot be rolled back to the previous version. If the system can be rolled back then it will display the number of days the rollback period is set to.
You can change this value anywhere from 2 to 60 by running the following command in an elevated PowerShell prompt:
DISM /Online /Set-OSUninstallWindow /Value:60
Source: DISM operating system uninstall command-line options
These commands work on Windows 10 20H2+ and Windows 11 21H2+
The registry key associated with this feature can be found at:
HKEY_LOCAL_MACHINE\SYSTEM\Setup\UninstallWindow
You can set the value of UninstallWindow to a decimal value anywhere between 2 and 60.
