Webcam blocked how can you unblock webcam so other people can see you?

Click on "Start." Select "Devices and Printers."

Right-click anywhere in the window and select "Device Manager" from the contextual menu.

Right-click on the name of your webcam and select "Enable." Applications will now be able to access your webcam.

Read more : http://www.ehow.com/how_10002783_unblock-webcam.html

It depends on what type of phone you got.
In order to unblock a contact Android, you should open Whatsapp, go to settings, select chat settings, and choose blocked contacts. Then, long click on the contact you want to unblock and select unblock.

To unblock a contact on iPhone: open Whatsapp, go to settings, select chat settings, and choose blocked. Then choose which contacts you want to unblock.

To unblock a contact on Nokia: open Whatsapp, go to settings, select general, and choose blocked. Then choose which contacts you want to unblock.

Check maybe your Internet Service Provider has blocked some communication ports. In this case you can ask them to unblock them for you or you can use a program like AutoTunnel that will unlock your blocked ports.

take a picter whit webcam

Many free online services allow you to access blocked websites through a proxy server. A proxy server is an intermediary between the user and the server where the request was send. Here is a list with the most known resources of web proxies: Proxy.org, HideMyAss.com, Kortaz.com, KProxy.com and Anonymouse.org

Ok
If am right blocked means unable to use with some software...
Ok first check the setting of your anti-virus at times it integrates the firewall setting and block your webcam

remove your girlfriend id from blocked list,

go to tools> options> privacy and right click the blocked person and click on move to allowed list