Why were the files of the previous version of Windows removed from my pc after upgrading to Win 10?

[Windows Central Question]

Why were the files of the previous version of windows removed from my pc after upgrading to win 10

When I tried to roll back to the previous version 3 days after upgrading to win 10 this is the message I got. "Were Sorry But You Can't Go Back" the files needed to take you back to the previous version of Windows were removed from your PC!

Before I discovered the proper way to roll back to the previous version I attempted System Restore twice to no avail. Is this what caused the files needed to be removed?

Stupefied and dumbfounded

 

[bonskibon37]

Re: Why were the files of the previous version of windows removed from my pc after upgrading to win

System restore points for windows 10 will only show on that OS. Any that you made before upgrading will not show in windows 10. It said on mine that I had a month before they were going to be deleted, and I reverted back after two weeks. Not sure why yours got deleted. Do you have your previous OS on a disk or usb?

I did a restore while in windows 10 and it did not remove files for reverting back, so no, I don't think they are connected.