In the web there are several ways to do it (like renaming
the .old Folder etc.)
But the offical supported way is this one (problably set during
a task sequence)
It
is actually a DISM command.
/Set-OSUninstallWindow
Run this command against an online image to set the number of
days after an upgrade that an uninstall can be initiated.
Syntax:
DISM /Online /Set-OSUninstallWindow /Value:<days>
Default is set to 10 days. Can be set between
2 – 60 days.
See also here:
https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-uninstallos-command-line-options
