Earlier this year, I tried to restore my "production" system, following the directions in the V15 manual. That system is Windows 10 Pro 64.
The V15 manual states on p. 99 (my highlights)
So I blithely assumed that I could do a Restore of my C : partition, after it somehow got hosed. Wrong!! I ended up reformatting that partition, doing a fresh install of Windows, and then re-installing all the programs and doing all the config settings. So I was pretty frustrated about the experience. When I wrote a letter a few months ago to Retrospect management about a bunch of issues, I included this issue.
I got a detailed response to all my issues from Robin Mayoff, which I do appreciate. However, it was very frustrating to read the following.
When you perform a restore of a Windows operating system with Retrospect, it is very important to perform this restore while booted from a Retrospect Disaster Recovery disk. It is not possible to restore a modern version of the Windows registry or Windows system while booted from the C disk. This is probably why you got some errors and ended up needing to reinstall programs.
Had I known this point, I could have saved myself several days of work.
Why am I posting this now, months after the fact? I can't fully explain why, but "stuff" happened. Still I thought this point is important enough so that the next person with this problem might find this post and save themselves a lot of trouble. As the expression goes, I am "paying it forward" in appreciation for all the help I get in this forum.