I've been using CCleaner for years, but this is the first time that I've used the Drive Wiper feature which I was quite happy to find. I chose to use free space only with 7 passes on a non-boot drive of 1.72 TB and let it run around 24 hours. It made it through about 60%, but today I needed to use the drive a bit. So I canceled the operation which was quick and easy.
But this did not free the space. I still have a file named "3590F75ABA9E485486C100C1A9D4FF06EGXJJQLXWOLTXWJK" at the root of my drive taking up 1.66 TB of space. I cannot delete it even in administrator mode due to the following error:
"File Access Denied
You need permission to perform this action
You require permission from the computer's administrator to make changes to this file"
This is on Windows 7 Enterprise 64-bit with CCleaner v4.10.4570 (64-bit). I searched around the forums but I haven't seen anyone else report this problem and get any useful feedback.
Trying to remove it in Cygwin says that it is removed but then doing an ls -la after that shows that it is still there (as does Windows Explorer).