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- Tue Jun 18, 2013 10:42 pm
- Forum: Windows Troubleshooting
- Topic: Steam Authentication Failed
- Replies: 58
- Views: 78919
Sorry for bringing back to life such an old thread, but I'm experiencing the same problem. I've tried all of the solutions mentioned here but none seems to work for me. Run defcon.exe as admin, run defcon.exe with windows XP compatibility setting, delete authkey file, verifying integrity of game cac...