Magento 1.9.3 Connect Manager not working

Question

Everytime I try to install an extention via Connect Manager, and right after I click on the Install button, it ask me for the login again. But then the login is not working anymore. What happened here?

See screenshot.

Answer 1

Please try to change permission of

directory /downloader/ set to 755

and file /downloader/index.php set to 644.