Internet Explorer cookies that appear grayed

When viewing cookies for Internet Explorer some cookies may appear grayed. These cookies are stored on your system but are not recognized by Internet Explorer, and hence are orphaned cookies. This can occur if the disk file containing the cookie data has been deleted but the index entry that is maintained by Internet Explorer still exists. It can also occur if the index entry for the cookie has been deleted but the disk file still exists. In both of these cases Internet Explorer will not send any of this cookie data to a web server, but you may want to delete these cookies to free up disk space and tidy your system.