Failed To Load Cef: Xlabs

The fastest and most successful fix for many players on Reddit's IW4x Community is elevating user permissions:

Run the X Labs Repair Guide steps to restore missing binaries. Still Experiencing Issues? Let's Troubleshoot failed to load cef xlabs

If the launcher interface continues to throw the CEF error, you can bypass the main menu direct UI call by forcing the executable directly into multiplayer mode: The fastest and most successful fix for many