Why am i always left 5121kb from internet explorer see attached that I can't del

IMG_20210825_0001.pdf

It's files that have been emptied but are still there so are found again.

Because they are always a set size CCleaner doesn't know if they are empty or not so always cleans them just in case they aren't empty.

(Ccleaner itself also puts a couple of temporary files in that area so will always find something in there).

See the link in my signature at the bottom of this post for a fuller explanation.