Hi Mohamed,
The error message indicates that no destinations are specified, this means the agent doesn't know where to send its events and thus shuts itself off (otherwise it would just buffer event data locally until it runs out of disk space). Depending on whether this is a standalone agent (in which case you'll need to add something to the AgentConfig.xml file, either directly or via the standalone configuration console) or a managed agent (in which case you'll need to add a log source on the QRadar side with a WinCollect protocol to your agent), the process for supplying the missing config is different so starting with the WinCollect 101 page Ralph mentioned is a good first step.
Cheers
Colin
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COLIN HAY
IBM Security
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