(Fixed) Engine Error: Library Client (Could not load library client) – Left 4 Dead 2

In order to fix Engine Error: Library Client (Could not load library client) in Left 4 Dead 2, you can try these;

  • Go to Steam and verify Left 4 Dead 2 game files.
  • Open Windows explorer and go to the installation folder of Left 4 Dead.
  • Navigate to L4D2Directory > Left 4 Dead 2 > left4dead2 > bin.
  • Look for “client.dll“.
  • Go to its Properties and set its permissions to “read-only” mode.
  • Launch Left 4 Dead 2.

Enjoy your game 🙂

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