For Chrome: - Uninstalling the Plugin then deleting the containing folder placed in: C:\Program Files (x86)\Battlelog Web Plugins
- Clear Browsing Data ( Settings/Privacy )
- Reinstalling the plugin by logging to Battlelog again
- In the search bar typing the following command: chrome://plugins
- Checking the box Always allowed for ESN Sonar API and Battlelog Game Launcher
- Restarting the Browser
- Log back into Battlelog via Origin (Play from Battlefield4 icon )
- Join a Server
For Internet Explorer 11 - Uninstalling the Plugin then deleting the containing folder placed in: C:\Program Files (x86)\Battlelog Web Plugins
- Restart IE 11
- From Internet Options/General tab -> Clear Browsing data -> Delete button
- From Security tab, slide the bar to bottom -> Medium Protection
- In Trusted Sites -> .battlefield.com should be added along with battlelog.battlefield.com/bf4/ and battlelog.battlefield.com/bf3/
- Log in again into Battlelog and download again the plugin.
- Join a server.
Mine started working again, think Origin decided to support 64bit chrome which they refused to at the beginning, usful info Duvel :thumb: