cant enable filestream option in sql server 2008?

I am trying to enable the filestream option in sql server 2008 but cant seem to enable it?

When i try to enable it like in http://msdn.mi开发者_JS百科crosoft.com/en-us/library/cc645585.aspx i get:

Configuration option 'filestream access level' changed from 2 to 2. Run the RECONFIGURE statement to install?

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got it working! i have to enable the filestream option for this instance first