i found something and it helped me to host gameshttps://eu.battle.net/support/en/article/7842
Click Start .
Type Firewall and press Enter.
Click Advanced Settings.
On the left frame, click Inbound Rules.
On the right frame, click New Rule...
Select the Port radio button and click Next.
Select the TCP radio button.
In the Specific Local Port field, enter 3724. Click Next.
Select the Allow the connection radio button. Click Next.
Make sure Domain, Public, and Private boxes are all checked. Click Next.
Enter any name for this rule. Click Finish.
i found lot of rules w2 and they were blocked, so i allowed them and i got host