I install PHP, Apache, and MySQL done and worked. When I finish installing Phpmyadmin, then open it has an error.
Failed to set session cookie. Maybe you are
I just ran into this problem using Firefox 61 on a site I had been using regularly, so I knew my config settings were correct. In fact, I could go in using Private Mode. So, in non-private mode, using the Firefox Developers Tools, I cleared ALL Session cookies and VOILA. Worked perfectly.
I faced this issue on phpMyAdmin-4.9.1. I simply renamed config file from config.sample.inc.php to config.inc.php.
Region is Chrome Extension. if you do not want change any thing then open url in other browser (Like Safari or Mozila) its working fine.
I had this issue today, and here are the steps that I did that helped me fix it on Chrome:
1- Right click anywhere on the page, and choose "inspect" or click F12 to open developer tools.
2- From the top menu, choose "Application".
3- Click Cookies on the left menu.
4- You will find some cookies there, click each one, and click "X" on the top to remove it. After removing all of them, refresh the page.