google chrome scripting first utilisation

Hello, I'm trying to launch chrome from a schedule task under a particular user account (in win2K8R2).
This is not working (chrome launch but cant open any page, including chrome:// ) unless I first opened a session on the server whith the particular account and launch chrome interactively.
Is there a way to avoid this and initialise chrome by script instead ?

FYI, I have tried to duplicate the defaut profile folder and use –user-data-dir='...' as suggested here https://portableapps.com/node/15476 and launch chrome using "runas another user" but this is ending with a popup message telling me "chrome cannot read write profile directory"