I installed newest versions of MySQL, IIS (on windows 10) and PHPMyAdmin.
But PHPMyAdmin 4.6.4 returns an error:
Failed to generate random CSR
I will write here, maybe it will be useful to someone. I have a similar problem but with mysql 8 on debian 9 and sometimes I get an error token. This kind of stupid solution works for me: I change the line in php.ini:
session.save_path = "/ var / lib / php / sessions"
For anything, later I run:
sudo service apache2 restart
And once again I change the exchange line above to the correct one and reset again and I can log in to phpmyadmin ...