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I'm trying to chain a series of .bat files using the EXIT /B X command to return success or failure and && and || for conditional running of the next .bat (e.g. a.bat && b.bat ). Regardless of whether I call EXIT /B 0 or anything else to end a.bat, a.bat && b.bat will call b.bat afterward. My understanding is that EXIT /B 0 should set ERRORLEVEL=0 , which is success, so the && should continue. The counterpoint to this is that calling EXIT /B 1 should set ERRORLEVEL=1 which is failure, so the && should stop. What am I missing here? Trivialized example: For non-batch commands, acting as expected: C:\> echo test|findstr test>NUL && echo yes yes C:\> echo test|findstr test>NUL || echo yes C:\> echo test|findstr nope>NUL && echo yes C:\> echo test|findstr nope>NUL || echo yes yes Using EXIT /B always sees a.bat as successful: C:\> echo @EXIT /B 0 > a.bat C:\> a.bat && echo yes yes C:\> a.bat || echo yes C:\> echo @EXIT /B 1 > a.bat C:\> a.bat && echo yes yes C:\> a.bat || echo yes How can I exit from a.bat so that a.bat && b.bat and a.bat || b.bat behave as expected? All commands are run in cmd.exe on Windows XP SP3.

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