New
#11
taskkill /f /IM steam.exe
/f being forced termination
/t is also good because it kills any child process which will just die anyway but this is good to add.
- - - Updated - - -
taskkill /t /f /IM steam.exe
- - - Updated - - -
the output you posted is also telling you to use /f
Reason: This process can only be terminated forcefully (with /F option)
- - - Updated - - -
Also note that there can be data loss that occurs from doing this but because you are doing it at shutdown it should not really be to much concern because you are not using the applications really at that time.
You can potentially see state changes not applying or reverting to previous states like this and maybe some small data inconstancy depending on how any of the apps save stuff. Overall though it should not matter.