I never use MS Internet Explorer; I do not see any sign of it in Task Manager's 3 sections, yet every time I run CCleaner v.5.69.7865 it is reporting deletion of **numerous** 'Temporary Internet Files' (TIF) - but no Cookies or Session files(??). I can let the PC run idle for say 15 minutes and CCleaner still picks maybe 135 more TIF's.
I've run Malwarebytes and Webroot scanners and nothing is found.
The same issue is on my wife's PC. Both PC's with Win 10 Home 2004 and Win 10 Pro 2004, respectively.