>>3163682 (pb) regarding windows email/password datafile "waitlist.dat" shenanigans. Found a thread with possible solution for permanent removal (apparently it re-installs itself)

https://social.technet.microsoft.com/Forums/windows/en-US/38d9154e-d6b4-46a5-8fd2-7a780eb072e1/deleted-user-forlder-reappears-with-textharvesterdat-microsoft-file?forum=w7itproinstall