C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5 This file was getting hundreds of files downloaded and saved EACH MINUTE that the computer was on with an open internet connection, EVEN WHEN MY BROWSER WAS CLOSED.
The normal Temporary Internet file, was clear of all but the most recent files, and effectively cleaned after each signoff and each system cleanup. But all system attempts were not able to clear this file. I used the three or four processes available through Microsoft for file cleanup that were referred to in several other post answers. None worked to reduce or clear that invisible folder. CCleaner did not delete those temp files. Neither did several other processes for cleaning up temp files. After much experimentation, including four system wide scans using four different security programs, and even a system restore i determined that trojans were not to blame. The solution is that I deleted Explorer 10 which defaulted back to 9, and there have been no more files added to that invisible folder since, note even one.
I like 10, but will not use it again until there is a fix on this issue. The files should be visible, especially when so marked, all the temp files should be cleaned, and my computer should not be communicating without my permission or knowledge.
[Original Title: Explorer 10 downloading massive number of Files stored in Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5 which is overwhelming my system.]