Open administrative command prompt and type or copy and paste:
DISM /Online /Get-OSUninstallWindow
If Error 1168, Element not found is seen then the previous version was deleted (beyond the default or modified roll back period)
If there was no error code then you can modify the roll back up to 60 days.
DISM /Online /Set-OSUninstallWindow /Value:60
Logs could be collected to see if there were any major problems reported.
.
.
.
.
.
Please remember to vote and to mark the replies as answers if they help.
On the bottom of each post there is:
Propose as answer = answered the question
On the left side of each post there is /\ with a number: click = a helpful post
.
.
.
.
.