Since 'clean installing' CU on my PC, I have an issue shredding files in my 'Temporary Files' folder.
If I point my temporary/temporary internet files to 'c:\windows\temp' I can successfully shred the files there.
However, if I point them to a user defined 'temporary file' location, I cannot; this worked OK when I ran CU after updating in situ from the AU.
I can 'delete' the files in both scenarios.
I'm currently running Windows 10 v1703 (Build 15063.296).