If you are using Windows 10, you also need to enable SMB 1.0.
• Windows 7
Go to Control panel -> Network and Internet -> Network and Sharing Center.
Find if your active network is Home network. If not, click it and change it
to Home network.
• Windows 10
Change your network to private by this tutorial.
Go to Control Panel -> Programs and Features -> Turn Windows features on or
off -> Find SMB 1.0/CIFS file sharing support, check all SMB1 related items, click
apply and restart your computer.