It is not unusual for it to mark Steam files as potential viruses and quarantine them.Below are listed different ways to disable the antivirus until you can update your game.The default location for the Steam directory is After copying the address open ESET NOD32 and paste the location in exclude from real time scanning.
This means that Steam can’t write update files to the hard disk. The most effective one is to uninstall Steam and all the local game content and reinstall it from scratch.
Although this worked for many users, it is a pretty time-consuming task and it also consumes a large amount of data.
This often results in the error while updating a game.
Browse to your current Steam directory and copy the address.
As you can tell, the extra information in the parenthesis behind the detailed error message is disk related.