I am starting to use MySQL Workbench tool especially for data modeling. So, the first I would like to do is reverse engineering of my existing database on web server. But I
On windows, with XAMPP i managed to fix the issue by going to the directory:
C:\xampp\mysql\bin and running the executable mysql_upgrade.exe you'll find inside, make sure your mysql server is running.
C:\xampp\mysql\bin
mysql_upgrade.exe