When starting jobs in powershell with smo, you have to use the jobname and categoryID. If you have same job name on multiple servers that could be in different category, and if you are running a single script that connects to multiple servers and starts...

SQLAGENT.OUT, the log file for SQL Agent, is usually the first place to investigate what could go wrong. However, when SQL Agent cannot start, a new SQLAGENT.OUT even is not generated at all. What should we investigate? If this kind of things happens...