I have downloaded the trial versions of PremiumSoft Navicat v 5.11 and PemiumSoft MySQL Launcher v3.23.55. When I start MySQL Launcher, start server, I get an error message saying 'error trying to perform specified action' and when I try to connect with PremiumSoft Navicat v 5.11 it says, could not connect using root@localhost.
Can someone please point me in the correct direction to rectify this.

Regards

rossifumi