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It is most likely a "plugin", an "extension" or an "anti virus" that blocks the connection between Passetonbillet and Facebook. When your browser uses extensions such as "DoNotTrackMe", "Ghostery" or "Avast" for example, Facebook will automatically be blocked. Therefore, check your extensions to see if they have been configured properly.

Common problems
The following list contains some examples of extensions and antivirus programs that can be responsible for most of the issues:

Do Not Track Me
Ghostery
Avast
AdBlocker

Disable Google Chrome extensions
Browse chrome: // extensions.
Check our list of extensions that may cause navigation problems.
Uncheck the box just in front of "Activated" to deactivate an extension.
 or:
Browse chrome: // plugins /.
Check our list of extensions that may cause navigation problems.
Uncheck the box just in front of "Activated" to deactivate a plugin.

Disable Firefox Add-ons
Click on the Firefox menu and Add-ons course.
Browse Extensions or Appearances and / or Plugins.
Check if the list contains plugins or extensions that could cause problems.
Press 'Deactivate' to deactivate the plugin or extension.
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