Prevent IE10 from creating WebCache through Group Policy
Webcache is part of WinINET and is loaded before IE (as other WinINET. To stop the caching you need to tell WinINET to stop caching.
Credit to http://www.tenforums.com/general-support/37841-disable-webcachev01-dat.html
First, stop the following task in task scheduler: Microsoft > Windows > Wininet
Second step is to delete the dcom REGEDIT search for this GUID:{3EB3C877-1F16-487C-9050-104DBCD66683} Delete this GUID You will have to change the ownership to your user to be able to delete this key.
Not pretty but it seems IE is piggybacking WinINET