Deleting something.

Do you have rights to delete it? If you're not an administrator on the computer, that's likely the issue.

If not, kill all processes that you know is safe to kill without a need for a reboot. Then try to delete.

If not that works, show us the contents of the folder. Be sure to include possibly hidden system files and other files.

I tried finishing pretty much all tasks on task manager and also tried to delete it in safe mode.
I can't really show the contents of the folder because it denies access to it when I try to view it.

The folder info is as follows:

 Spoiler

So you can also see that there is nothing in it.