False Disk Read Error when Updating with Active Avg
Posted by Lord Diligent (Firefly) on 13 January 2016 02:12 PM

Disk Read or Write Error

When installing or updating a game, Steam displays an error message:


  • "An error occurred while updating [game title]"
  • "An error occurred while installing [game title]"

Either of these messages contains the following detail in parentheses: "disk read error" or "disk write error."


If you are have AVG 2015 installed, deactivating it for the duration of the installation of the update/installation should allow the update or installation to proceed normally.

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