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On this page, you will find more information about the most common causes and most relevant solutions for the Dota 2 error 'An error occurred while updating Dota 2'. Do you need help straight away? Visit our support page.
The Valve Corporation documentation indicates that error code 'An error occurred while updating Dota 2' is caused by the following problem: "This error stops the updating process of Dota 2 and prevents players from launching the game".
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