Steam an error occurred while updating dota 2
Installing into same location will preserve all installed games. If one is already available, you can create a new Steam library folder on this drive.You can then install new games into this Steam library folder or move already installed games there.This is a common type of error that can occur any time a game is updated or installed on Steam The error results when Steam is not able to complete the installation.The specific reason for the error will be shown in the parenthesis at the end of the error message.Clearing the Steam download cache will cause the Steam client to flush locally cached configuration data and acquire it from the Steam servers again.
This can cause memory and file corruption and should be disabled (usually in the computer BIOS).
Certain firewalls may prevent Steam from talking to its servers.
You'll want to work with a tech support specialist to ensure that the Firewall is not interfering.
AV software hooks very deep into user systems and can affect disk and network operations which will cause issues with Steam.
Some games also use copy protection technology that can appear as malicious software to an AV scanner, resulting in potential false-positive alerts.