Kiyomi94-san,
Try to install AShampoo Free firewall, (http://www.ashampoo.com/en/usd/pin/0050 ... eWall-FREE).
This is the firewall program that I'm using right now.
Just install and register for free, then run the program.
After that, when you run osu!, something will pop-up on the corner of your screen, just check "Apply to all ports for ths application" and "Create rule/ Don't ask again" then click allow.
After allowing osu!, try to log-in on the game. If you successfully log-in, the Hooorayy!

Try to install AShampoo Free firewall, (http://www.ashampoo.com/en/usd/pin/0050 ... eWall-FREE).
This is the firewall program that I'm using right now.

Just install and register for free, then run the program.
After that, when you run osu!, something will pop-up on the corner of your screen, just check "Apply to all ports for ths application" and "Create rule/ Don't ask again" then click allow.
After allowing osu!, try to log-in on the game. If you successfully log-in, the Hooorayy!

