Therules of Firewallare very simple.Blockanyincoming trafficwhich can be detrimental to the computer.
There is also a provision inWindows 8 Firewall, using which you canblock outgoing trafficalso.
Just move your cursor (if you are on a desktop) to thebottom right hand sideof the screen.
The Charms bar will open.
More Charms bar will open.
you’re gonna wanna viewControl Panelin Small icons mode.
From this screen, one can click onWindows Firewall, which is at the bottom.
How to Block a Program in Firewall?
you better punch Change prefs in the above window.
This will switch on the options in the below pane.
To block an app, just pick the the corresponding app and un-check it.
Here you have the option of blocking it fromPrivate or Public.
The above two profiles belong to the web link you joined initially.
This can be found inAll Control Panel Items > connection and Sharing Center > Advanced sharing controls.
After you have found the web link profile to which you are attached, just uncheck that option.
You will automatically block that app from that profile.
But if you want to block the app from bothPublic and Private, just uncheck the item.
For example theMail, Calendar and Peopleapp is currently allowed through the firewall.
So just uncheck under the Public or Private profile.
Also you could altogether uncheck it at the start.
PressOK,after its done.
Actually this should suffice enough to block theMail, Calendar and Peopleapp.
But when I checked these apps, they were connecting to the Internet.
So then I realized that I should also block them under Outbound Rules inWindows 8 Firewall.
How to Unblock Program in Firewall Windows 8?
For some unknown reason, you haveblocked an applicationusing the above procedure.
Now, you want to unblock it.
You just have to follow the reverse-engineering process.
Conclusion
Though I followed the above steps, this method failed to work for me.