Hi
When you do a check using the “Registry option” it advises you to do a back up. I have been using the Professional version for the last year and the free version for several years before that
How long should I keep back ups for.
Thanks
Until you’re sure the changes you made don’t break anything.
While i plan on every six months or so i have ones from years gone by.
Depending on what you remove you may not notice breakage immediately
Keep backups for 1-2 weeks longer if you have space, but delete once your system is stable.