"You must enable rollback to continue with setup"

[matthewk]

Trying to install dotnetfx.exe and I get an error: you must enable rollback to continue with the setup. I tried the registry fix that is posted by m$ and on another site: http://support.microsoft.com/kb/312499/EN-US/ . The key did not exist in the registry for me though. I am guessing it is relative to System restore being disabled or a service that I've disabled. Is there a way to install this and possibly other things that require the same without enabling SR? Thanks

[Aegis]

Make the key and set it to the value MS wants it at.

[matthewk]

I caught myself checking those paths m$ had mentioned when I first found that reading. After reading your post, I did a search in the registry and found it being set to 1! Thanks, changing the value worked.