Thread: QC does not launch in STEAM. Gives "Failed to start game - unknown error"

QC does not launch in STEAM. Gives "Failed to start game - unknown error"

  1. #1
    I'm getting an error when trying to start QC from STEAM. "Failed to launch - unknown error". I've tried all of the suggested troubleshooting tips on STEAM. Also, this is running from an account with ADMIN access. QC runs fine from another account on the same PC with admin access.

    Windows 7
    AMD FX4100
    8GB Memory
    AMD Radeon 6670
    1TB HD
    *

  2. #2
    Join Date
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