If you delete anything from this folder incorrectly, you may not see any immediate effect, but you may see problems later, especially if you want to uninstall some software or other through the normal Windows Add/Remove programs route.
Here's a couple of links that tell more about the C:\Windows|Installer folder. One talks about Vista, but the general information is the same;
I look at this folder much like the Program Files folder. I might not know what every sub-folder is, but unless I am sure I want to uninstall some specific application, I leave it alone. That is doubly true for any Windows folder siles and sub-folders.
I am not seeing anything new on this. There was a MS utility for this but it looks like MS has taken it down.
I have looked online but don't see any answers.
Any way of cleaning uneeded space in this folder?