migrate databases from 5.5 to 5.6 locally on Windows

[Michiel vM]

Hi, I was asked to upgrade an existing Mysql 5.5.34 to 5.6.33 on a Windows server.
For this I used the installer and ended up with 2 versions of MySQL server on the same machine.

I managed to "shutdown" the 5.5 version.
Now I'm left with an empty MySQL5.6 server. It shows only the default databases. Someone suggested to copy the data directory from the 5.5 dir to the 5.6 dir and run mysql_upgrade. Which I did.

When I run "show databases;" they're still not there.
What do I need to do to migrate my existing databases into 5.6??

Please help me out. I'm a relative newbie to MySQL

regards,
Michiel