If SQL Server Agent starts and stops automatically:
1. Check Permissions: Ensure the service account has the right permissions.
2. Ensure SQL Server is Running: SQL Server Agent depends on the main SQL Server service.
3. Check Event Viewer: Look for errors in `Application` or `System` logs.
4. Check SQL Agent Logs: Review logs for specific errors.
5. Verify Service Account Password: Ensure it's correct.
6. Confirm Configuration: Make sure the Agent is enabled in Configuration Manager.
7. Check Databases: Ensure critical databases like `msdb` are online and healthy.