When we run .exe manually, it works fine, but same .exe is not working in Windows's Task Scheduler?

I deployed .exe in windows 2008 R2 server, it is running fine when we run manually, but it is not running in Task Scheduler (TS), when we run in TS, task is completing with out any error, but in 'Last Run result' column it shows this '(0xC0000142)' instead of 'The operation completed successfully', I checked in event viewer also no error. Please help on this.