Thank you Alan for your fast reply. (I hope I am inserting this reply in the correct place, I have never seen one w/o a separate reply box) I see that I was in the right place about the nature/importance of Hotfixes. I am a novice at this PC thing and although I follow your ideas and reasoning, actually putting items into a remote "partition" and reparse points....... this is the 3rd PC I have owned and in it's 4th year of use. During that time I have never had to uninstall a Hotfix because of a bug. I have plenty of HD space left (I'll never fill it), so that is not the issue. I am looking to optimize it's speed and reducing unnecessary files and keeping temp. caches low/empty seemed to be one way to accomplish that. Based on real life, is it practical to delete uninstall Hotfixes?. It is something I never would have thought of, but since it is offered on CCleaner,it appears to be a viable option. Overall safe, or really best to leave be? I tend to think that MS would have a command prompt method prepared if a Hotfix would have to be removed at a later time. Or is that unlikely?