Why are my PowerShell exit codes always “0”?

Question

I\'ve got a PowerShell script as follows

##teamcity[progressMessage \'Beginning build\']
# If the build computer is not running the appropriate version of .N         


        

Answer 1

Using -ErrorAction stop on a command returns an Exit code 1 by default and is showing it also in TeamCity without adding a Failure Condition. We will now implement this behaviour by default for every PowerShell command using $ErrorActionPreference = "Stop";.