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Upload fail: Unable to validate files

A Forum Thread for Counter-Strike: Source

Hey. I have a problem when im trying to upload my CSS map. It says "Upload Fail: Unable to validate upload files (error code 3) What can be the reason?


  • 7y
    Jonny-higgins avatar
    Jonny-higgins username pic Joined 11y ago
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    What type of file are you trying to upload? And what size is it?
  • 7y
    Eranthis avatar
    Eranthis Joined 7y ago
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    Same problem with me. I'm using a .zip file. Also my screenshots do the same thing and they worked fine just a few seconds ago.
    Coach Disciple
  • 6y
    Click "Add" and then add or refresh page.


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  • 3 Posts
  • 7y Submitted
  • 5y Modified

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