Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Possible Duplicate:
Windows Updates Folders (With Strange Names) in C drive

I have a folder named "ed6b7b66d9c1d645bfce0f8b33c3" under C: of Windows 7. I was wondering what its purpose is and if it is safe to delete? Thanks!

It takes up 120 MB. Its content is as follows: enter image description here

share|improve this question

marked as duplicate by Sathya Feb 4 '11 at 3:37

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

The answers have all got this right. I would point out that some MS updates will act funny if you delete these folders THEN try to uninstall them (although I'm not aware of any that would actually be broken or anything that severe) – Shinrai Feb 3 '11 at 19:14
up vote 12 down vote accepted

Googled the KBxxxxxx numbers, shows that the folder contains a .NET Framework setup.

It is safe to delete as it is solely an installer...

share|improve this answer

Yes it is safe to delete, those odd numbered folders on the root of C are leftovers from Microsoft patches, upgrades or installers, sometimes they do not get cleaned up when it is done installing.

It appears it was left over from a Microsoft NET framework installer

share|improve this answer

Looks like setup files of an application. Some setup applications extract themselves to a directory and start the installation from that location. That's one of them. Start setup.exe to find out what it is. If you have the original setup then you can safely delete.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.