[Drive Wipe won't wipe one particular file]

I have run Drive Wipe twice on the same drive and there is one file that remains. I find it using Recuva. I also tried bleachbit with same result. This one file seems to defile all efforts to wipe it. It is named Outlook Express emails.zip with no last modified date shown and a size of 45,881Kb. I haven't used Outlook Express in ages, probably since Windows XP.

I highlighted it and checked Secure Overwrite Checked and got this message attached.

 

Anyone with any ideas?

[Is it possible to schedule free space wipe to run unattended?]

I have CCleaner Professional, version 5.01.5075 64 bit. I have it scheduled to clean but I would like to wipe my free space(s) during the late night hours also. Is it possible to schedule this operation?

[Task Scheduler To Automate CCleaner ?]

I have a Vista laptop. I followed all the instrutions above to the letter. CCleaner appears to have run,according to History for the task, but my Recycle Bin is still not empty. If I select Run in Task Scheduler, same thing. Recycle bin does not empty. If I start and run CCleaner manually from my desktop icon, it cleans the Recycle Bin This happens only on my Vista laptop. All my XP machines run perfectly.