I have a user here who can't view the pictures in an email and I am certain it is the Outlook Secure Temp files because I had this problem recently and deleted the contents of it and it worked. I was reading the following link, but could somebody explain to me how to make it so this folder is automatically cleared??
https://www.experts-exchange.com/questions/22561795/Outlook-Secure-Temp-Folder-Full.html