They are from Critical Updates installs (windowsupdate.microsoft.com
usually). They are the files for uninstall of those updates. If all is
working well, they are safe to delete.
They are blue 'cos they are compressed. Those are the uninstall files for
the Windows Updates. If you are *certain* that you will not have uninstall
any of the Windows Updates, those folders can be deleted.
--
Will Denny
MS-MVP Windows Shell/User
Please reply to the News Groups
These $Uninstall folders are created when you install a Microsoft Service Pack, a hotfix, or certain security updates. These folders contain the undo/uninstall information for the update you install. That means, you will be unable to remove an update in future, if you delete these folders. You may leave them there unless you need hard drive space. Each QXXXXXX represents an update from Microsoft. To know more about an update, type the URL in your browser: http://support.microsoft.com/?kbid=XXXXXX
[Replace the XXXXXX with the actual numbers. Don't include the "Q" or "KB"]
Try using a tool called Update Cleanup. It deletes those $NtUninstallKB folders and cleans up the related Registry entries at the same time. It frees up alot of hard disk space. Although it is not free, you are given a lengthy free trial which is more than enough time for you to clean up these folders.
It worked great on two PCs I tried it on. No problems.
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