Trying to install Parallel Studio XE 2016 Update 2 and got an error message indicating "Package signature verification failed." Tried installing addtrustexternalcaroot.crt and quovadis_rca_der.cer, but I'm still getting the error. No good forum available.
Microsoft Windows 7
Parallel Studio XE 2016, Update 2
Fails both the online and stand-alone installations failed