Yes, the mark one human brain. If you aren’t sure that it shouldn’t be deleted then you shouldn’t be messing with the registry unless you have a backup strategy.

But best of all use some form of registry cleaner (regcleaner or regseeker for example) that can restore deletions. This is however, is not infallible as a deletion could stop your computer from booting and you wouldn’t be able to run the registry cleaner and restore the deletion. You really have to have a backup strategy or don’t mess with registry unless you are happy to deal with the potentialconsequences.