When running WPI and installing from a network share, all exe-files gets flagged as "blocked" and you have to manually press run on every exe as WPI launches them. I seem to remember this was an issue earlier when Win8 came out, and a later version of WPI solved it. So it seems your workaround for that issue has been voided. Hopefully there´s a quick and easy fix for this, as it´s kind of tedious to have to attend my unattended executables.